Bosch 25 pc. 3/16 In. x 6 In. x 8-1/2 In. SDS-plus Bulldog Xtreme Carbide Rotary Hammer Drill Bits

The Bosch SDS-plus? Bulldog? Xtreme Rotary Hammer Bit provides 4X life in concrete with rebar， due to its 100% full-carbide tip design and proprietary diffusion-bonding technology. Diffusion bonding’s high-heat， high-pressure solid-state welding produces an incredibly strong bond. In internal tests， these bits delivered 4X life in concrete with rebar than a standard SDS-plus? bit. The Bulldog? Xtreme bit provides 25% more holes per charge， with an upgraded variable flute design �C four flutes transition to two flutes for fast dust removal. Its centric conical tip results in rounder holes for precision anchoring， and it has a wear mark that helps to assure accuracy of the hole.