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. Hex shank for maximum power transfer in standard three-jaw drills and hexagonal screwdriver chucks. Ideal for building trades. For use on first drill speed only.