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 insert bits. Manufactured with heavy-duty, cold-forged, high-grade steel, they'll withstand extremely high torque output.

Features

• Built for maximum durability and long life with impact drivers
• Forged bit* (vs. milled) for superior fitment, which reduces stripping and increases life of bit 3 times**
• Black oxide finish resists corrosion and increases life of bit

*Square & Phillips bits only
** vs standard scewdriver bit