Bosch BlueGranite Turbo carbide hammer drill bits deliver long life and speed over standard masonry bits, resulting in increased on-the-job productivity. This impact rated bit has been redesigned with a hex shank and is designed for use in today's highertorque hammer drills and impact drivers. The bit features and 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. Milled U-flutes with deep cut spirals delivers fast dust removal. Bosch made carbide delivers outstanding durability under heavy loads.