Our Metric M35 HSS Cobalt Drill Bits are engineered for heavy-duty drilling in tough and high-hardness materials. Made from M35 (HSS-Co 5%) cobalt high-speed steel, these drills deliver outstanding heat resistance, superior durability, and excellent cutting performance, especially when machining stainless steel, alloy steel, hardened steel, cast iron, and other difficult-to-cut metals.
With precision-ground flutes and a reinforced split point design, these cobalt bits provide fast penetration, accurate positioning, and reduced walking for smooth, efficient drilling.