Bosch 3/8" x 4" x 6" BluGranite Turbo Hammer Drill Bit, an upgraded build that delivers 5X life and 2X speed over standard masonry bits. With its hex shanks and impact rating, this bit can be used in impact drivers and hammer drill/drivers for added versatility. The 4 grind head provides 2 more cutting angles for longer life and faster speed, while the multi-grind carbide centering tip offers accurate starts in brick, masonry, and more. The robust bit head provides long life in impact applications, and the milled U-flutes with deep cut spirals deliver fast dust removal. The Bosch-made carbide delivers outstanding durability under heavy loads. This bit has a 3/8" diameter, 6" flute length, 6" length, 6" overall length, .3125" shank diameter, and 4" usable length. It is ANSI approved and suitable for use in hammer drills.