29pc Hyper-Step High-Speed Cobalt Stubby Reduced Shank Drill Bit Set, Tungsten-Cobalt, 1/16 - 1/2 TurboStep HSS Mechanics, Industrial-Grade, Metal Drilling for Stainless/Hardened Steel

Industrial-Grade M35 Cobalt Alloy: Engineered with high-performance M35 tungsten-cobalt for extended lifespan and precision in tough drilling tasks.
4X Longer Life: Outlasts standard split point bits, providing superior durability for heavy-duty drilling on metal, wood, and stainless steel.