Highly versatile drill bits which can drill accurately into hard materials such as tile and granite without skidding due to its sharp tip, advanced geometric design and bosch centring geometry. Made from optimised carbide it can also tackle concrete, brick, wood and metal. Maximum precision when drilling multiple materials. Can be used in impact mode on concrete and stone, and on rotary setting for brick, tile, sheet metal, wood and plastic. Cylindrical shank compatible with three-jaw drill chucks. Ideal for building trades. Carbide Straight Shank 5.5mm-8mm Dia. Drill Bits Suitable for Concrete, Soft Tiles, Steel, Softwood & Plastics Carbide Tip For Use with 3-Jaw Chuck Machines on Rotary & Impact Modes Carbide Straight Shank 5.5mm-8mm Dia. Drill Bits Suitable for Concrete, Soft Tiles, Steel, Softwood & Plastics Carbide Tip For Use with 3-Jaw Chuck Machines on Rotary & Impact Modes