Up to 5x more precise than a Bosch CYL-3 Drill Bit Accurate drilling is easier with Bosch Centering Geometry Hex shank for a strong connection and maximum torque transmission in three-jaw chucks and ¼" internal hex tool holders 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 Scope of delivery: Bosch EXPERT HEX-9 Multi Construction Drill Bit, 16x350x400, Manufacturer: Bosch