Bosch Hammer Drill Bit HCBG27T 1 Inch Carbide Masonry Cutter (3 8 Hex Shank 12 Inch Length High Speed Concrete Brick Impact Percussion Drilling) Crown Stapler DirectTorque Contact Geometry: Sockets bear DirectTorque Contact Geometry: Sockets bear against the flat sides of fasteners rather than the corners to prevent stripping and rounding on worn hardware Jam Free Coil Collation: Wire weld coil binding maintains consistent angle feed alignment inside 15 degree coil framing nailers The Bosch HCBG27T 1 Inch x 12 Inch BlueGranite Turbo Carbide Hammer Drill Bit delivers professional grade mechanical penetration rates when anchoring heavy duty fasteners Industrial Impact Rated Hex Shank Carbide Bit for High Speed Structural Concrete and Brick Percussion Drilling