IRWIN 1881078 Impact Drill Bit Set, Carbide, Black Oxide, 5-Piece, For Impact Drills, Cordless or Corded Drills

Innovative pressed carbide tip with aggressive cutting angles for faster drilling and longer bit life. One-piece construction withstands higher torque loads than standard quick-change bits. Black oxide finish resists corrosion and increases life of bit. 1/4 in quick-change shank is designed to work with impact drivers and reduces slipping in standard drill chucks.