1 x Bosch EXPERT HEX-9 Multi Construction Drill Bit 6 x 90 x 150mm Bosch EXPERT HEX-9 Multi Construction Drill Bits offer high precision drilling in multiple materials; soft concrete, masonry, brick, ceramics, tiles, wood, plastic, sheet metals and aluminium. Accurate drilling is easier with Bosch Centering Geometry. The specially designed centring tip allows you to start holes accurately. This high-performance carbide tip is manufactured by fine grinding. The optimised dust extraction channel allows for fast, efficient drilling. Its hex shank provides a strong connection and maximum torque transmission in three-jaw chucks and 1/4in internal hex tool holders. The Bosch EXPERT HEX-9 Multi Construction Drill Bit is the one drill bit which should always be in your toolbox: you'll never get stuck on a job or waste time looking for the right bit.