Up to 5x more precise than Bosch CYL-3 Drill Bit - The modern construction site requires working on 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 Multi Construction Drill Bit. 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 HEX-9 Multi Construction Drill Bit is the one drill bit that should always be in your toolbox: you'll never get stuck on a job or waste time looking for the right bit. Hex shank for a strong connection and maximum torque transmission in three-jaw chucks and " internal hex tool holders.