Highly Robust - The Impact Control HSS Twist Drill Bit offers highly robust drilling in metal, especially with impact drivers. Extremely strong body is extremely robust. The twist drill bit is precision-ground from solid metal and has an oxide-coated flute, giving it an excellent surface quality for slicing through materials with reduced wear. It is suitable for use on alloyed and non-alloyed steel, cast steel, cast iron, sintered iron, non-ferrous metals, sheet metals and plastics. This drill bit is compatible with a 1/4-inch hex-shank system for universal use with drill drivers, impact drivers and drill stands. Hex shank for maximum power transfer in standard three-jaw drills and hexagonal drill driver chucks. Features and Benefits • Highly Robust with Impact Drivers • Impact Control HSS Twist Drill Bit offers highly robust drilling in metal, especially with impact drivers • The super-strong body is extremely robust Specifications Diameter: 2,5; 3,3; 4,2; 4,2; 5,0; 5,0; 6,8; 8,5mm