Bosch Professional 4x Expert CYL-9 MultiConstruction Drill Bit Set. This highly versatile drill bit can drill accurately into hard materials, such as granite, without skidding – thanks to its sharp tip and advanced geometric design. Made from optimised carbide using our fine grinding manufacturing technique, it can also tackle concrete, brick, soft tile, wood and metal. It can always do a professional job – whatever the material. The Bosch EXPERT CYL-9 Multi Construction Cylindrical Drill Bit is the one drill bit that should always be in your toolbox. Cylindrical shank compatible with three-jaw drill chucks. Features: Up to 5x more precise than a Bosch CYL-3 Drill Bit, Accurate drilling is easier with Bosch Centering Geometry, Cylindrical shank compatible with three-jaw drill chucks, Ideal for drilling holes into multiple materials. Can be used in impact mode on concrete and stone, and on rotary setting for brick, soft ceramic tile, sheet metal, wood and plastic. Best for building trades: maximum precision and highly versatile. Specifications: Diameter mm: 4.0; 5.0; 6.0; 8.0. Working length mm: 40; 50; 60; 80. Total length mm: 75; 85; 100; 120. Scope of delivery: Bosch EXPERT MultiConstruction CYL-9 Drill Bit Set 4/5/6/8 mm 4-pc.