Up to 5 times more precise than a standard drill bit. Modern construction sites require working with many different materials, and you never know what you will need to drill next. Finding the right drill bit can be difficult and time-consuming – unless you have the Expert MultiConstruction drill bit. This extremely versatile drill bit allows for precise drilling in hard materials like tiles or granite without slipping. This is made possible by its sharp tip and advanced geometric design. It is manufactured using our fine-tuning production process from optimized carbide, making it suitable for concrete, brick, wood, and metal alike. Regardless of the material, it always delivers professional results. The Bosch Expert MultiConstruction HEX-9 drill bit is an essential tool in any toolbox: you can complete any job accurately without wasting time searching for the right drill bit. Hex shank for maximum power transfer in standard drill chucks and hex screwdriver chucks. Diameter (D) mm: 7.00, working length (L1) mm: 90, total length (L2) mm: 150.