{"id":8615,"date":"2023-12-05T22:36:09","date_gmt":"2023-12-05T22:36:09","guid":{"rendered":"https:\/\/adiseal.com\/?p=8615"},"modified":"2026-11-08T00:12:55","modified_gmt":"2026-11-08T00:12:55","slug":"best-drill-bits","status":"publish","type":"post","link":"https:\/\/adiseal.com\/fr\/best-drill-bits\/","title":{"rendered":"Best Drill Bits"},"content":{"rendered":"\n<h1 id=\"h-what-are-the-best-drill-bits-for-metal-steel-masonry-and-other-materials\" class=\"wp-block-heading\">What are the Best Drill Bits for Metal, Steel, Masonry and Other Materials?<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Finding the <strong>best drill bits<\/strong> depends on the material being drilled, the type of drill being used and the performance required. To find out which drill bits perform best, we tested Adiseal Ultimate against leading brands including Bosch, DeWalt, Makita and Milwaukee.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In our 10mm cobalt <a href=\"https:\/\/adiseal.com\/metal-drill-bit\/\" data-type=\"post\" data-id=\"6337\">metal drill bit<\/a> test, Adiseal Ultimate drilled 135 holes in 6mm-thick SUS304 stainless steel, outperforming every competitor tested for durability. It also achieved the fastest average drilling speed, taking just 31.7 seconds per hole.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We also tested <a href=\"https:\/\/adiseal.com\/masonry-drill-bit\/\" data-type=\"post\" data-id=\"6351\">masonry drill bits<\/a> without using the hammer function, comparing their drilling speeds in our tests.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This guide explains the test methods and results, compares different types of drill bits, and helps you choose the right drill bit for metal, stainless steel, masonry and other materials.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"400\" src=\"https:\/\/adiseal.com\/wp-content\/uploads\/2023\/11\/best-metal-drill-bit-1.jpg\" alt=\"Best cobalt metal drill bit. Adiseal Ultimate metal drill bits demonstrated as fastest drilling speed and most durable in comparison testing.\" class=\"wp-image-8494\" srcset=\"https:\/\/adiseal.com\/wp-content\/uploads\/2023\/11\/best-metal-drill-bit-1.jpg 400w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/11\/best-metal-drill-bit-1-300x300.jpg 300w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/11\/best-metal-drill-bit-1-150x150.jpg 150w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/11\/best-metal-drill-bit-1-100x100.jpg 100w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/11\/best-metal-drill-bit-1-275x275.jpg 275w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quick links:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"#Best-Metal-Drill-Bit-Test-Procedure\">Best Metal Drill Bit Test Procedure<\/a><\/li>\n\n\n\n<li><a href=\"#Best-Masonry-Drill-Bit\">Best Masonry Drill Bit<\/a><\/li>\n\n\n\n<li><a href=\"#What-Materials-Can-These-Drill-Bits-Drill\">What Materials Can These Drill Bits Drill<\/a><\/li>\n\n\n\n<li><a href=\"#Frequently-Asked-Questions-About-the-Best-Drill-Bits\">Frequently Asked Questions About the Best Drill Bits<\/a><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br><\/p>\n\n\n\n<h2 id=\"Best-Metal-Drill-Bit-Test-Procedure\" class=\"wp-block-heading\">Best Metal Drill Bit Test Procedure<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">To find out which are the <a href=\"https:\/\/adiseal.com\/metal-drill-bit\/\" data-type=\"post\" data-id=\"6337\">best metal drill bits<\/a>, we carried out a series of tests with drill bits from several top brands such as Milwaukee Cobalt Red, DeWalt Extreme, Bosch Cobalt, and Makita along with the new Adiseal Ultimate metal drill bit. Using a Scheppach DP60 drill press, the test was to drill as many 10mm holes as possible in 6mm thick stainless steel (SUS304). To conduct a fair and accurate test, we set the drill press to maintain a consistent speed of 400 rpm. We also attached a 5kg weight to the drill press arm to apply consistent pressure during drilling. This helped maintain consistent testing conditions across all the drill bits.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For wear resistance testing purposes, the drilling was carried out without lubricants, coolants, or cutting oils, although these can help reduce the bit&rsquo;s temperature and extend its lifespan. The drilling processes were video recorded and timed using video timestamps. These videos are available on request for independent verification of the test results.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The results of the test showed the top drill bits are the new <strong>Adiseal Ultimate metal drill bits, emerging as the clear winner<\/strong>, surpassing all competitors in both the number of holes drilled and the time taken to drill each hole. They demonstrated the best overall performance in our tests, achieving the highest number of holes drilled and the fastest average drilling speed. Below is a table of the results.<br><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"490\" src=\"https:\/\/adiseal.com\/wp-content\/uploads\/2023\/08\/Metal-drill-bit-test-results-chart-1024x490.webp\" alt=\"Best metal drill bits test results chart. Adiseal Ultimate metal drill bits proven fastest and most durable in testing.\" class=\"wp-image-6340\" srcset=\"https:\/\/adiseal.com\/wp-content\/uploads\/2023\/08\/Metal-drill-bit-test-results-chart-1024x490.webp 1024w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/08\/Metal-drill-bit-test-results-chart-300x143.webp 300w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/08\/Metal-drill-bit-test-results-chart-768x367.webp 768w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/08\/Metal-drill-bit-test-results-chart-700x335.webp 700w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/08\/Metal-drill-bit-test-results-chart-410x196.webp 410w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/08\/Metal-drill-bit-test-results-chart-100x48.webp 100w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/08\/Metal-drill-bit-test-results-chart-275x131.webp 275w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/08\/Metal-drill-bit-test-results-chart.webp 1071w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 id=\"Best-metal-drill-bit-durability-test-results\" class=\"wp-block-heading\">Best metal drill bit durability test results<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th><strong>10mm metal cobalt drill bit<\/strong><\/th><th><strong>Total number of holes drilled<\/strong> (in 6mm stainless steel)<\/th><\/tr><\/thead><tbody><tr><td>Adiseal Ultimate cobalt<\/td><td>135 holes<\/td><\/tr><tr><td>Milwaukee cobalt red<\/td><td>75 holes<\/td><\/tr><tr><td>DeWalt Extreme cobalt<\/td><td>39 holes<\/td><\/tr><tr><td>Bosch cobalt<\/td><td>15 holes<\/td><\/tr><tr><td>Makita cobalt<\/td><td>12 holes<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">Cobalt drill bit durability test results<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Adiseal Ultimate metal drill bit drilled 135 holes in total. This was 9 times more holes than the Bosch cobalt drill bit, which only managed 15 holes in total. Adiseal Ultimate also drilled more than 3 times the number of holes than the best DeWalt metal cobalt drill bit, which was only 39 holes in total. Adiseal Ultimate metal drill bits was easily the strongest, <strong>most durable metal drill bit<\/strong> and <strong>best drill bits for steel<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"375\" src=\"https:\/\/adiseal.com\/wp-content\/uploads\/2023\/12\/Metal-drill-bit-test-1024x375.jpg\" alt=\"Metal drill bit test. Drilling 10mm diameter holes in a 6mm thick stainless steel plate to test metal drill bits drilling speed and durability.\" class=\"wp-image-11126\" srcset=\"https:\/\/adiseal.com\/wp-content\/uploads\/2023\/12\/Metal-drill-bit-test-1024x375.jpg 1024w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/12\/Metal-drill-bit-test-300x110.jpg 300w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/12\/Metal-drill-bit-test-768x282.jpg 768w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/12\/Metal-drill-bit-test-700x257.jpg 700w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/12\/Metal-drill-bit-test-410x150.jpg 410w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/12\/Metal-drill-bit-test-100x37.jpg 100w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/12\/Metal-drill-bit-test-275x101.jpg 275w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/12\/Metal-drill-bit-test.jpg 1091w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><br><\/p>\n\n\n\n<h3 id=\"h-best-metal-drill-bit-speed-test-results\" class=\"wp-block-heading\">Best metal drill bit speed test results<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Adiseal Ultimate metal drill bit also outperformed all other metal drill bits in terms of drilling speed. With the same test as before, we also measured the time it took to drill each hole. We worked out the average of the first 10 holes and listed the results in the table below. The Adiseal Ultimate metal bit consistently drilled holes significantly faster than any other bit, demonstrating its exceptional efficiency and time-saving capabilities.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th><strong>10mm metal cobalt drill bit<\/strong><\/th><th><strong>Average time to drill each hole (in 6mm stainless steel) for first 10 holes<\/strong><\/th><\/tr><\/thead><tbody><tr><td>Adiseal Ultimate cobalt<\/td><td>31.7 seconds<\/td><\/tr><tr><td>DeWalt Extreme cobalt<\/td><td>38.5 seconds<\/td><\/tr><tr><td>Milwaukee cobalt<\/td><td>55.8 seconds<\/td><\/tr><tr><td>Makita cobalt<\/td><td>69.9 seconds<\/td><\/tr><tr><td>Bosch cobalt<\/td><td>132.4 seconds<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">Metal drill bit speed test results<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Adiseal Ultimate drilled each hole in an average of 31.7 seconds, making it over four times faster than the Bosch <a href=\"https:\/\/adiseal.com\/cobalt-drill-bits\/\" data-type=\"post\" data-id=\"8477\">cobalt drill bit<\/a>, which averaged 132.4 seconds per hole.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Please note, these are our test results from internal testing. We have recorded a video of each hole being drilled. These videos are available on request for independent verification of the test results.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Several non-cobalt metal drill bits like the Milwaukee Thunderweb, were also tested but excluded from the chart for fairness purposes. The non-cobalt Bosch PointTeq metal drill bit did not manage to drill any holes in the 6mm thick stainless steel SUS304 in our tests.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br><\/p>\n\n\n<figure class=\"wp-block-embed-youtube wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"lyte-wrapper\" style=\"width:640px;max-width:100%;margin:5px;\"><div class=\"lyMe\" id=\"WYL_ywpXauDTlCM\"><div id=\"lyte_ywpXauDTlCM\" data-src=\"https:\/\/adiseal.com\/wp-content\/plugins\/wp-youtube-lyte\/lyteCache.php?origThumbUrl=%2F%2Fi.ytimg.com%2Fvi%2FywpXauDTlCM%2Fhqdefault.jpg\" class=\"pL\"><div class=\"tC\"><div class=\"tT\"><\/div><\/div><button tabindex=\"0\" class=\"play\"><\/button><div class=\"ctrl\"><div class=\"Lctrl\"><\/div><div class=\"Rctrl\"><\/div><\/div><\/div><noscript><a href=\"https:\/\/youtu.be\/ywpXauDTlCM\" rel=\"nofollow\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/adiseal.com\/wp-content\/plugins\/wp-youtube-lyte\/lyteCache.php?origThumbUrl=https%3A%2F%2Fi.ytimg.com%2Fvi%2FywpXauDTlCM%2F0.jpg\" alt=\"YouTube video thumbnail\" width=\"640\" height=\"340\" \/><br \/>Lire cette vid\u00e9o sur YouTube<\/a><\/noscript><\/div><\/div><div class=\"lL\" style=\"max-width:100%;width:640px;margin:5px;\"><\/div><figcaption><\/figcaption><\/figure>\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br><\/p>\n\n\n\n<h2 id=\"Commercial-Value-Analysis:-True-Cost-Per-Hole-(CPH)-Efficiency\" class=\"wp-block-heading\">Commercial Value Analysis: True Cost-Per-Hole (CPH) Efficiency<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 id=\"Saves-money\" class=\"wp-block-heading\">Saves money<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Investing in professional-grade cutting tools must be justified by operational efficiency. Although some drill bits have a lower purchase price, their shorter working life and slower drilling speeds can result in a higher overall cost. Our testing demonstrates how drill-bit durability and drilling speed can affect the cost of completing a job.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h4 id=\"h-material-cost-comparison-matrix\" class=\"wp-block-heading\">Material Cost Comparison Matrix<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">True tool economy is calculated using the <strong>Cost-Per-Hole (CPH)<\/strong> formula:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cost-Per-Hole = Retail-Purchase-Price \/ Total-Lifecycle-Holes-Drilled<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To illustrate this structural difference on a standard commercial task, consider the real expenditure required to drill <strong>10 holes<\/strong> through a 6mm thick SUS304 stainless steel plate using pricing models from the official online store:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Adiseal Ultimate 10mm Cobalt Bit Baseline:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><em>Unit Purchase Price:<\/em> \u00a310.64<\/li>\n\n\n\n<li><em>Total Lifecycle Output:<\/em> 135 holes<\/li>\n\n\n\n<li><em>Calculated Cost-Per-Hole:<\/em> <strong>\u00a30.08<\/strong><\/li>\n\n\n\n<li><em>Net Material Cost to Drill 10 Holes:<\/em> <strong>\u00a30.79<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bosch Cobalt 10mm Bit Comparison:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/its.co.uk\/pd\/bosch-pro-10mm-x-133mm-stainless-steel-hss-co-twist-drill-bit-_bos2608577613.htm?gclsrc=aw.ds&amp;gad_source=1&amp;gad_campaignid=23915551341&amp;gbraid=0AAAAAD_BUEvSWzPzKLooM0SUWlHHd9N0f&amp;gclid=CjwKCAjw1bvTBhBbEiwAzbP8L3oCRsC-hXYw4gpB2aia3RvJs1duEB1YYIPXyQy5nRUZs0MFptPC4hoC9MUQAvD_BwE\" rel=\"nofollow\"><em>Unit Purchase Price:<\/em> \u00a37.99<\/a><\/li>\n\n\n\n<li><em>Total Lifecycle Output:<\/em> 15 holes<\/li>\n\n\n\n<li><em>Calculated Cost-Per-Hole:<\/em> <strong>\u00a30.53<\/strong><\/li>\n\n\n\n<li><em>Net Material Cost to Drill 10 Holes:<\/em> <strong>\u00a35.33<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Economic Conclusion:<\/em> Based strictly on metallurgical longevity, the premium Bosch Cobalt alternative is <strong>6.75 times more expensive<\/strong> to operate per hole than the Adiseal Ultimate. HSS alternatives, such as the non-cobalt <em>Bosch PointTeq<\/em>, create zero trade value as they did not drill even a single hole through stainless steel (6mm thick SUS304).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">These calculations are estimates based on the number of holes drilled during our tests and the stated purchase prices. Actual costs will vary depending on drilling conditions, materials, technique and the lifespan achieved in other applications.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br><\/p>\n\n\n\n<h3 id=\"Saves-time\" class=\"wp-block-heading\">Labour &amp; Applied Overhead Cost Savings<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Drilling speed directly impacts active labour expense. Slow-penetrating bits prolong production timelines, aggressively inflating total project overhead.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Assuming a conservative commercial trade labour baseline of <strong>\u00a320.00 per hour<\/strong> (\u00a30.0056 per operating second), the real-world economic savings become clear when compiling the time logs required to process a 10-hole layout in 6mm stainless steel:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Adiseal Ultimate 10mm metal drill bit<\/th><th>Bosch Cobalt 10mm metal drill bit<\/th><\/tr><\/thead><tbody><tr><td>Average Production Runtime (10 Holes)<br><strong>317 seconds<\/strong> (5.3 mins)<\/td><td>Average Production Runtime (10 Holes)<br><strong>1,324 seconds<\/strong> (22.1 mins)<\/td><\/tr><tr><td>Direct Labour Overhead Cost<br><strong>\u00a31.76<\/strong><\/td><td>Direct Labour Overhead Cost<br><strong>\u00a37.36<\/strong><\/td><\/tr><tr><td>Net Consumable Material Cost<br><strong>\u00a30.79<\/strong><\/td><td>Net Consumable Material Cost<br><strong>\u00a35.33<\/strong><\/td><\/tr><tr><td>Total Realized Cost (Material + Labour)<br><strong>\u00a32.55<\/strong><\/td><td>Total Realized Cost (Material + Labour)<br><strong>\u00a312.69<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br><\/p>\n\n\n\n<h3 id=\"Saves-tools\" class=\"wp-block-heading\">Auxiliary Operational Benefits<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Beyond direct material and labour metrics, the specialized geometry of the Adiseal Ultimate provides three critical macro efficiencies on-site:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Extended Power Tool Lifespan:<\/strong> Reducing cutting runtimes heavily curtails internal motor heat buildup and gear friction on drill presses and cordless rotary tools, drastically extending the lifecycle of expensive primary assets.<\/li>\n\n\n\n<li><strong>Reduced Energy &amp; Carbon Footprint:<\/strong> Faster penetration times optimize power draw. This makes the Adiseal Ultimate a highly energy-efficient and environmentally responsible selection for sustainable procurement guidelines.<\/li>\n\n\n\n<li><strong>No Pilot Holes Required:<\/strong> Adiseal Ultimate&rsquo;s patented tip is designed to help the drill bit start accurately and reduce walking across metal surfaces. This can make positioning holes easier and may remove the need for a pilot hole in some applications.<\/li>\n\n\n\n<li><strong>Debris Control &amp; Clean Finishes:<\/strong> Produces thick, large metallic curls rather than fine, airborne hazardous metal dust. This simplifies post-job site cleanup, speeds up extraction, and leaves a clean burr-free entry point.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"750\" height=\"500\" src=\"https:\/\/adiseal.com\/wp-content\/uploads\/2023\/09\/Drilled-long-metallic-curls.jpg\" alt=\"Long curls drilled from metal instead of small chips or dust.\" class=\"wp-image-11139\" srcset=\"https:\/\/adiseal.com\/wp-content\/uploads\/2023\/09\/Drilled-long-metallic-curls.jpg 750w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/09\/Drilled-long-metallic-curls-300x200.jpg 300w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/09\/Drilled-long-metallic-curls-410x273.jpg 410w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/09\/Drilled-long-metallic-curls-99x66.jpg 99w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/09\/Drilled-long-metallic-curls-699x466.jpg 699w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/09\/Drilled-long-metallic-curls-275x183.jpg 275w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 id=\"h-\" class=\"wp-block-heading\"><br><\/h3>\n\n\n\n<h3 id=\"h-where-to-buy\" class=\"wp-block-heading\">Where To Buy<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/guglue.com\/\"><img loading=\"lazy\" decoding=\"async\" width=\"240\" height=\"48\" src=\"https:\/\/adiseal.com\/wp-content\/uploads\/2020\/03\/buy-Adiseal-from-Guglue-button.png\" alt=\"Buy Adiseal products from our official shop www.guglue.com\" class=\"wp-image-10263\" srcset=\"https:\/\/adiseal.com\/wp-content\/uploads\/2020\/03\/buy-Adiseal-from-Guglue-button.png 240w, https:\/\/adiseal.com\/wp-content\/uploads\/2020\/03\/buy-Adiseal-from-Guglue-button-100x20.png 100w\" sizes=\"auto, (max-width: 240px) 100vw, 240px\" \/><\/a><figcaption class=\"wp-element-caption\">Buy Adiseal products from our official shop <a href=\"https:\/\/guglue.com\/\">www.guglue.com<\/a><\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br><\/p>\n\n\n\n<h3 id=\"h-materials\" class=\"wp-block-heading\">Materials<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Adiseal Ultimate <strong>best cobalt metal drill bit<\/strong> is also suitable at drilling many other materials including:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Stainless steel<\/li>\n\n\n\n<li>Hardened steel<\/li>\n\n\n\n<li>Metal<\/li>\n\n\n\n<li>Aluminium<\/li>\n\n\n\n<li>Bronze<\/li>\n\n\n\n<li>Brass<\/li>\n\n\n\n<li>Copper<\/li>\n\n\n\n<li>Cast iron<\/li>\n\n\n\n<li>Plain carbon steel<\/li>\n\n\n\n<li>Wood<\/li>\n\n\n\n<li>Plastic<\/li>\n\n\n\n<li>Fibreglass<\/li>\n\n\n\n<li>Plus many other materials<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><br><\/p>\n\n\n\n<h2 id=\"Best-Masonry-Drill-Bit\" class=\"wp-block-heading\">Best Masonry Drill Bit<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Drilling into abrasive materials like concrete can wear out drill bits, especially if they are not durable. It can also take some time and energy to drill into.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The Adiseal Ultimate range also includes the fastest no-hammer masonry drill bit and multi-material drill bit. It was found to be the <strong>best masonry drill bit<\/strong> in our tests. It had the fastest drilling speed when drilling without hammer function on the drill. Drilling without hammer function provides numerous advantages over hammer drilling including:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>lower noise<\/li>\n\n\n\n<li>lower vibration damage<\/li>\n\n\n\n<li>less chance of breaking the substrate<\/li>\n\n\n\n<li>reduced risk of loosening surrounding mortar<\/li>\n\n\n\n<li>can drill more accurate sized holes<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Adiseal Ultimate carbide masonry drill bit can <a href=\"https:\/\/adiseal.com\/brick-drill-bit\/\">drill into brick<\/a>, <a href=\"https:\/\/adiseal.com\/concrete-drill-bit\/\">concrete<\/a>, wood, cinder block, plaster and many other building materials. Adiseal Ultimate <a href=\"https:\/\/adiseal.com\/carbide-drill-bit\/\">carbide drill bit<\/a> has been demonstrated to be the best <a href=\"https:\/\/adiseal.com\/heavy-duty-drill-bits\/\">heavy duty masonry drill bit<\/a> with a <a href=\"https:\/\/adiseal.com\/hex-shank-masonry-drill-bit\/\">hex shank<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"588\" src=\"https:\/\/adiseal.com\/wp-content\/uploads\/2023\/09\/no-hammer-vs-hammer-drill-breaking-brick.webp\" alt=\"Comparison of holes drilled with Adiseal Ultimate masonry and multi-material drill bit and a SDS hammer drill bit in a brick. The Adiseal Ultimate drill bit hole is clean whereas the SDS drill bit broke a big chunk out of the brick.\" class=\"wp-image-6774\" srcset=\"https:\/\/adiseal.com\/wp-content\/uploads\/2023\/09\/no-hammer-vs-hammer-drill-breaking-brick.webp 1000w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/09\/no-hammer-vs-hammer-drill-breaking-brick-300x176.webp 300w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/09\/no-hammer-vs-hammer-drill-breaking-brick-768x452.webp 768w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/09\/no-hammer-vs-hammer-drill-breaking-brick-700x412.webp 700w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/09\/no-hammer-vs-hammer-drill-breaking-brick-410x241.webp 410w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/09\/no-hammer-vs-hammer-drill-breaking-brick-100x59.webp 100w, https:\/\/adiseal.com\/wp-content\/uploads\/2023\/09\/no-hammer-vs-hammer-drill-breaking-brick-275x162.webp 275w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><br><\/p>\n\n\n\n<h2 id=\"What-Materials-Can-These-Drill-Bits-Drill\" class=\"wp-block-heading\">What Materials Can These Drill Bits Drill<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Adiseal Ultimate <strong>best masonry drill bit<\/strong> &amp; multi-material drill bit can drill into many different materials including:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/adiseal.com\/brick-drill-bit\/\">Brick<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/adiseal.com\/concrete-drill-bit\/\">Concrete<\/a><\/li>\n\n\n\n<li>Stone<\/li>\n\n\n\n<li>Tile<\/li>\n\n\n\n<li>Ceramic<\/li>\n\n\n\n<li>Marble<\/li>\n\n\n\n<li>Wood<\/li>\n\n\n\n<li>Plastic<\/li>\n\n\n\n<li>Fibreglass<\/li>\n\n\n\n<li>Plasterboard<\/li>\n\n\n\n<li>Cement board<\/li>\n\n\n\n<li>Cinder block<\/li>\n\n\n\n<li>Plus many other building materials<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 id=\"Where-to-Buy-Drill-Bits-for-Metal\" class=\"wp-block-heading\">Where to Buy Drill Bits for Metal<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In the UK to <a href=\"https:\/\/guglue.com\/product-category\/drill-bits\/metal-drill-bits\/\">buy the best metal drill bits<\/a> or to <a href=\"https:\/\/guglue.com\/product-category\/drill-bits\/masonry-drill-bits\/\">buy the best masonry drill bits<\/a>, please <a href=\"https:\/\/adiseal.com\/contact-us\/\">contact us<\/a> for details of your local stockist. For other countries, please visit <a href=\"https:\/\/guglue.com\">www.guglue.com<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br><\/p>\n\n\n\n<h3 id=\"h-what-sizes-are-adiseal-ultimate-cobalt-metal-drill-bits-available-in\" class=\"wp-block-heading\">What sizes are Adiseal Ultimate cobalt metal drill bits available in?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Adiseal Ultimate cobalt metal drill bit is currently available in the following sizes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/guglue.com\/product\/adiseal-ultimate-metal-drill-bit-2-5mm-x-62mm-cobalt\/\">2.5mm metal drill bit<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/guglue.com\/product\/adiseal-ultimate-metal-drill-bit-3mm-x-72mm-cobalt\/\">3mm metal drill bit<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/guglue.com\/product\/adiseal-ultimate-metal-drill-bit-3-5mm-x-74mm-cobalt\/\">3.5mm metal drill bit<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/guglue.com\/product\/adiseal-ultimate-metal-drill-bit-4mm-x-84mm-cobalt\/\">4mm metal drill bit<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/guglue.com\/product\/adiseal-ultimate-metal-drill-bit-4-5mm-x-87mm-cobalt\/\">4.5mm metal drill bit<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/guglue.com\/product\/adiseal-ultimate-metal-drill-bit-5mm-x-94mm-cobalt\/\">5mm metal drill bit<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/guglue.com\/product\/adiseal-ultimate-metal-drill-bit-5-5mm-x-97mm-cobalt\/\">5.5mm metal drill bit<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/guglue.com\/product\/adiseal-ultimate-metal-drill-bit-6mm-x-104mm-cobalt\/\">6mm metal drill bit<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/guglue.com\/product\/adiseal-ultimate-metal-drill-bit-6-5mm-x-107mm-cobalt\/\">6.5mm metal drill bit<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/guglue.com\/product\/adiseal-ultimate-metal-drill-bit-7mm-x-107mm-cobalt\/\">7mm metal drill bit<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/guglue.com\/product\/adiseal-ultimate-metal-drill-bit-8mm-x-116mm-cobalt\/\">8mm metal drill bit<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/guglue.com\/product\/adiseal-ultimate-metal-drill-bit-9mm-x-127mm-cobalt\/\">9mm metal drill bit<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/guglue.com\/product\/adiseal-ultimate-metal-drill-bit-10mm-x-133mm-cobalt\/\">10mm metal drill bit<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/guglue.com\/product\/adiseal-ultimate-metal-drill-bit-11mm-x-140mm-cobalt\/\">11mm metal drill bit<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/guglue.com\/product\/adiseal-ultimate-metal-drill-bit-12mm-x-149mm-cobalt\/\">12mm metal drill bit<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/guglue.com\/product\/adiseal-ultimate-metal-drill-bit-13mm-x-152mm-cobalt\/\">13mm metal drill bit<\/a><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><br><\/p>\n\n\n\n<h2 id=\"Frequently-Asked-Questions-About-the-Best-Drill-Bits\" class=\"wp-block-heading\">Frequently Asked Questions About the Best Drill Bits<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1697660343469\"><strong class=\"schema-faq-question\">What are the toughest drill bits in the world?<\/strong> <p class=\"schema-faq-answer\">The toughest drill bit depends on the material being drilled and the application. Cobalt HSS drill bits are commonly used for demanding metal-drilling applications, including stainless steel. Tungsten carbide-tipped masonry drill bits are designed for abrasive materials such as brick, concrete and stone. Solid-carbide drill bits are used in specialist metal-machining applications where high hardness and wear resistance are required.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1701814742947\"><strong class=\"schema-faq-question\">What is the best bit to drill through thick steel?<\/strong> <p class=\"schema-faq-answer\">Cobalt HSS drill bits are a popular choice for drilling thick steel and stainless steel because they offer good heat resistance, hardness and wear resistance. They are particularly useful for demanding metal-drilling applications. The correct drill speed, pressure and cutting lubricant are also important when drilling thicker metals.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1701814847301\"><strong class=\"schema-faq-question\">What is the hardest masonry drill bit?<\/strong> <p class=\"schema-faq-answer\">The hardest masonry drill bits are typically crafted from tungsten carbide, renowned for its extreme hardness and durability. Tungsten carbide surpasses the materials it drills into, like concrete, brick, and stone, making it ideal for prolonged use without premature wear or breakage.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1701815131573\"><strong class=\"schema-faq-question\">Are carbide drill bits strong?<\/strong> <p class=\"schema-faq-answer\">Yes. Carbide is an extremely hard and wear-resistant material used in several types of drill bits. Tungsten carbide-tipped masonry drill bits are commonly used for drilling brick, concrete and stone. Solid-carbide drill bits are also used for certain metal-machining applications. The correct type depends on the material being drilled and the drilling equipment.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1701815384827\"><strong class=\"schema-faq-question\">Which is better cobalt or HSS drill bits?<\/strong> <p class=\"schema-faq-answer\">Cobalt drill bits excel in drilling hard materials, offering durability and wear resistance. On the other hand, HSS drill bits are versatile and cost-effective, making them suitable for a broader range of drilling tasks.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1701899375933\"><strong class=\"schema-faq-question\">Are Makita drill bits any good?<\/strong> <p class=\"schema-faq-answer\">In our test drilling 10mm holes in 6mm-thick SUS304 stainless steel, the Adiseal Ultimate cobalt drill bit outperformed the Makita cobalt drill bit. The Adiseal Ultimate metal drill bit drilled 135 holes in stainless steel, while the Makita metal drill bit managed only 12 holes. Moreover, the Adiseal Ultimate metal drill bit exhibited more than double the speed of the Makita drill bit when drilling into 6mm thick stainless steel (SUS304).<\/p> <\/div> <\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br><\/p>\n\n\n<div class=\"wp-block-post-date__modified-date wp-block-post-date\"><time datetime=\"2026-11-08T00:12:55+00:00\">8 novembre 2026<\/time><\/div>","protected":false},"excerpt":{"rendered":"<p>What are the Best Drill Bits for Metal, Steel, Masonry and Other Materials? Finding the best drill bits depends on the material being drilled, the type of drill being used and the performance required. To find out which drill bits perform best, we tested Adiseal [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1190],"tags":[],"class_list":["post-8615","post","type-post","status-publish","format-standard","hentry","category-drill-bit"],"translation":{"provider":"WPGlobus","version":"3.0.6","language":"fr","enabled_languages":["en","es","fr"],"languages":{"en":{"title":true,"content":true,"excerpt":false},"es":{"title":false,"content":false,"excerpt":false},"fr":{"title":false,"content":false,"excerpt":false}}},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.8 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>What are the Best Drill Bits for Metal, Steel, Masonry and other materials?<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/adiseal.com\/best-drill-bits\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Best Drill Bits - Adiseal\" \/>\n<meta property=\"og:url\" content=\"https:\/\/adiseal.com\/best-drill-bits\/\" \/>\n<meta property=\"og:site_name\" content=\"Adiseal\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/AdisealLtd\/\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/suhailmat\" \/>\n<meta property=\"article:published_time\" content=\"2023-12-05T22:36:09+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-11-08T00:12:55+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/adiseal.com\/wp-content\/uploads\/2023\/11\/best-metal-drill-bit-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"400\" \/>\n\t<meta property=\"og:image:height\" content=\"400\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Suhail Matadar\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@Adiseal\" \/>\n<meta name=\"twitter:site\" content=\"@Adiseal\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Suhail Matadar\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"11 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/adiseal.com\\\/best-drill-bits\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/adiseal.com\\\/best-drill-bits\\\/\"},\"author\":{\"name\":\"Suhail Matadar\",\"@id\":\"https:\\\/\\\/adiseal.com\\\/#\\\/schema\\\/person\\\/7b9ca47bc1a9d541dfcf906bd62b5e54\"},\"headline\":\"Best Drill Bits\",\"datePublished\":\"2023-12-05T22:36:09+00:00\",\"dateModified\":\"2026-11-08T00:12:55+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/adiseal.com\\\/best-drill-bits\\\/\"},\"wordCount\":1990,\"image\":{\"@id\":\"https:\\\/\\\/adiseal.com\\\/best-drill-bits\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/adiseal.com\\\/wp-content\\\/uploads\\\/2023\\\/11\\\/best-metal-drill-bit-1.jpg\",\"articleSection\":[\"Drill Bit\"],\"inLanguage\":\"fr-FR\"},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/adiseal.com\\\/best-drill-bits\\\/\",\"url\":\"https:\\\/\\\/adiseal.com\\\/best-drill-bits\\\/\",\"name\":\"What are the Best Drill Bits for Metal, Steel, Masonry and other materials?\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/adiseal.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/adiseal.com\\\/best-drill-bits\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/adiseal.com\\\/best-drill-bits\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/adiseal.com\\\/wp-content\\\/uploads\\\/2023\\\/11\\\/best-metal-drill-bit-1.jpg\",\"datePublished\":\"2023-12-05T22:36:09+00:00\",\"dateModified\":\"2026-11-08T00:12:55+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/adiseal.com\\\/#\\\/schema\\\/person\\\/7b9ca47bc1a9d541dfcf906bd62b5e54\"},\"description\":\"What are the best drill bits for metal, steel and masonry? 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Tungsten carbide surpasses the materials it drills into, like concrete, brick, and stone, making it ideal for prolonged use without premature wear or breakage.","inLanguage":"fr-FR"},"inLanguage":"fr-FR"},{"@type":"Question","@id":"https:\/\/adiseal.com\/best-drill-bits\/#faq-question-1701815131573","position":4,"url":"https:\/\/adiseal.com\/best-drill-bits\/#faq-question-1701815131573","name":"Are carbide drill bits strong?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes. Carbide is an extremely hard and wear-resistant material used in several types of drill bits. Tungsten carbide-tipped masonry drill bits are commonly used for drilling brick, concrete and stone. Solid-carbide drill bits are also used for certain metal-machining applications. The correct type depends on the material being drilled and the drilling equipment.","inLanguage":"fr-FR"},"inLanguage":"fr-FR"},{"@type":"Question","@id":"https:\/\/adiseal.com\/best-drill-bits\/#faq-question-1701815384827","position":5,"url":"https:\/\/adiseal.com\/best-drill-bits\/#faq-question-1701815384827","name":"Which is better cobalt or HSS drill bits?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Cobalt drill bits excel in drilling hard materials, offering durability and wear resistance. On the other hand, HSS drill bits are versatile and cost-effective, making them suitable for a broader range of drilling tasks.","inLanguage":"fr-FR"},"inLanguage":"fr-FR"},{"@type":"Question","@id":"https:\/\/adiseal.com\/best-drill-bits\/#faq-question-1701899375933","position":6,"url":"https:\/\/adiseal.com\/best-drill-bits\/#faq-question-1701899375933","name":"Are Makita drill bits any good?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"In our test drilling 10mm holes in 6mm-thick SUS304 stainless steel, the Adiseal Ultimate cobalt drill bit outperformed the Makita cobalt drill bit. The Adiseal Ultimate metal drill bit drilled 135 holes in stainless steel, while the Makita metal drill bit managed only 12 holes. 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