Irwin 1870541 Impact Drill Bit, 1/8 in Dia, 4 in OAL, 1-Flute, 1/4 in Dia Shank, Hex Shank

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.