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 a fine-tuning process from optimized carbide and is equally suitable for concrete, brick, wood, and metal. Regardless of the material, it always delivers professional results. The Bosch Expert MultiConstruction HEX-9 drill bit is a must-have in any toolbox: you can complete any task precisely and won't waste time searching for the right drill bit. Hexagonal shank for maximum power transfer in standard drill chucks and hex screwdriver chucks. Diameter (D) mm: 4.00, Working length (L1) mm: 45, Total length (L2) mm: 90.