features and benefits:
- 33 piece impact performance power bits
- these bits are forged rather than milled
- manufactured with heavyduty, coldforged, highgrade steel
- irwin's impact performance series bits have three times longer life than traditiol bits
- comes in a molded plastic case to hold bits securely in place until ready for use
while most screwdriving bits are simply compatible with impact drills and drivers, irwin impact performance series fastener drive bits are engineered for maximum durability and long life with impact drivers.These bits are forged rather than milled, so they fit fasteners more precisely, which reduces stripping and increases the life of the bit itself irwin's impact performance series bits have three times longer life than traditional bits.