This 12mm x 200mm x 250mm Bosch Expert CYL-9 Multi Construction Drill Bit is a highly versatile drill bit for accurately drilling into hard materials such as tile and granite without skidding, thanks to its sharp tip and advanced geometric design. Made from optimised carbide, this multi construction drill bit can also be used to drill concrete, brick, wood and metal. Bosch Expert CYL-9 Multi Construction Drill Bits are up to five times more precise than standard drill bits and have a cylindrical shank compatible with three-jaw drill chucks.