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. It can be difficult and time-consuming to find the right drill bit unless you have the Expert MultiConstruction drill bit. This extremely versatile drill 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 CYL-9 MultiConstruction cylindrical shank drill bit is an essential tool in any toolbox: you can complete any task precisely without wasting time searching for the right drill bit. Cylindrical shank suitable for keyless chucks. Diameter (D) mm: 4.00, Working length (L1) mm: 80, Total length (L2) mm: 130.