Blue Granite Turbo, 7/8" x 10" x 12", Carbide Hammer Bit, Ergo Grip Round Shank Provides Better Grip For Great Speed, 4 Grind Head Delivers Two More Cutting Angles For Longer Life & Faster Speed, Multi-Grind Carbide Centering Tip Offers Accurate Starts In Brick, Masonry & More, Robust Bit Head Provides Long Life In Impact Applications, Milled U-Flutes With Deep Cut Spirals Delivers Fast Dust Removal, Bosch Made Carbide Delivers Outstanding Durability Under Heavy Loads.