Shot-peened, double tempered finish reduces breakage IRWIN IRWIN Tools IMPACT Performance Series Concrete Screw 9 Piece Drill-Drive Installation set with PRO Set Case for 3/16 & 1/4 Screws Bit will fit all hammer drills with 3-jaw or Jacobs chuck and features a chrome vanadium shaft through hardened to 50-53HrC, shot-peened, double-tempered finish, flute geometry removes dust from the hole quicker, copper braze material gives high heat resistance. Bosch BlueGranite Turbo HCBG18T Hammer Drill Bit, 1/2 in Dia, 12 in OAL, Milled Flute, 2-Flute, 5/16 in Dia Shank Irwin Carbide Tip Drill Bit Kango 10 X 200mm Straight Shank Masonry Bit | Warehouse 12mm Masonry Drill Bit Copper braze material gives high heat resistance STRAIGHT SHANK MASONRY BIT - Belfast Carbide Tip design removes dust fast for long life Round Shank fits all hammer drills with 3-jaw chuck
