Description
- Multiple Sizes: This step drill bit for metal replaces 11 separate bits and comes in sizes ranging from 4mm to 22mm. Cone cutter has 11 precision steps (3, 4, 5, 13mm), which make cone drill bit easy to drill or expand holes in copper busbars, aluminum alloy frames, stainless steel brackets, and cast iron machinery parts
- Superior M35 Cobalt Alloy: This hole drill bit has double the hardness of regular HSS (66–69 HRC) and is made from M35 cobalt high-speed steel. In comparison to non-cobalt bits, the heat-treated alloy reduces bit dulling by 50% and guarantees clean cuts on soft metals like copper and aluminum sheets while resisting wear on hardened steel plates
- Spiral Flute and 118° Split Point: Guarantee a smoother and quicker drilling operation. Slippage in the step drill bit is eliminated by the 1/4" (6.35mm) hex shank design. In order to prevent wandering and enable accurate hole beginnings without a pilot hole, 18° X-type cutting tips self-center
- Unique Shape: The spiral shape can avoid slipping and make metal drill bits for hard steel easy to clear the wood chips while working, and the titanium coating's tapered ends reduce friction and overheating. Perfect for electrical installations, auto repairs, and industrial maintenance
- Fulfill a Number of Processing Requirements: Hole cutter drill bit designed to work with spring steel, aluminum, copper, plastic, cast iron, stainless steel, and mold steel. Steel drill bits for hard steel is ideal for metalworkers, electricians, and do-it-yourselfers working on projects ranging from fabricating aluminum sheet metal to installing stainless steel kitchens, no need for various tools
