Bosch BlueGranite Turbo? Carbide Hammer Drill Bits deliver 5x life and 2x speed over standard masonry bits, resulting in increased on-the-job productivity. This impact-rated bit has been redesigned with a hex shank, and it is designed for use in today's higher torque hammer drills and impact drivers. The bit features an upgraded four-grind head, delivering additional cutting angles for faster drilling. The multi-grind centering tip also provides for precise starts in masonry, block and concrete.