Premium Platinum Drill Bit Tooling Machine-Shop-Grade - PMXPLT266 Large Gas bits are engineered to cut through the hardest materials and drastically increase productivity. Excellent for drilling extremely hard materials including broken extractors and taps. Also great for exhaust manifold repair, water pumps and valve covers. Drilling metals introduces many challenges including the hardness of the metal, accessibility, and the thickness of the material. Finding quality, long-lasting drill bits to meet the above conditions is becoming more difficult today. All of the platinum tooling is high-performance A-GR-SiV sub-micron grain carbide. The tools are coated for lubricity and fast feed rates, even in hardened steel. Our line of platinum tooling can be used for extremely hard materials including broken extractors and taps. They are micro-point and double fluted. (140-degree point, 30-degree helix/-.0015�+.0000�). Our platinum tooling is machined turned right here in the USA and engineered to not only hana wide variety of material types and hardnesses but it is also manufactured to a specific tolerance to ensure the most accurate and trouble-free drilling today. That is why we call it tooling, the same high quality used in high-speed machine shop operations. As a technician, we know your time is valuable, so we designed our bits to punch through quickly and accurately to deliver the predictable results you expect.