【Material】: Made from strong HHS high-speed-steel for durability, fast cutting, impact resistance; The accuracy of concentricity makes the tooth edge even and prolongs the life of the hole
【Features】: The hole drill is designed with a spring, which is conducive to chip removal and high drilling efficiency; It has a spring that will not jam the drill bit when used, and the spring will automatically push the disc out of the saw immediately after finishing drilling
【Advantages】: With special heat treatment, sharp edge, high strength, high hardness and toughness, heat resistance, wear resistance, low consumption, impact resistance
【Applications】: Suitable for hand held electric drill, stand motor-driven drilling machine and mobile ribbon type magnetism drilling machine; Provide fast and precise cuts into stainless steel, sheet metal, cast iron, mild steel, aluminum, plastic, copper and brass; Perfect for installing locks, knobs on doors and cabinets, or drilling holes through desks, etc