IRWIN Tools IMPACT Performance Series Insert Bit Set, 1-inch length, 10-Piece Pocket Set, 4-Pack (1899931)

IRWIN Impact Performance Series fastener drive bits are engineered for maximum durability and long life with impact drivers. These bits are designed with precision tip geometry so they fit fasteners more precisely, which reduces stripping and cam-out. Manufactured with heavy-duty, cold-forged, high-grade steel, they'll withstand extremely high torque output, and the black oxide finish resists corrosion and increases the life of the bit. They're designed with a 1/4" quick-change shank, so they work with all types of impact and rotary drivers. Plus, they also have a unique Power Groove design for use with the exclusive IRWIN Magnetic Collar Attachment, which prevents fasteners from slipping and wobbling.

• Built for maximum durability and long life with impact drivers
• Precision tip geometry delivers superior fitment, reducing stripping and cam-out
• Power Groove designed for compatibility with IRWIN Impact Performance Series Magnetic Screw-Hold Attachment
• Manufactured with heavy-duty, cold-forged, high-grade steel to withstand high torque output
• 1/4" quick-change shank is designed to work with impact drivers, and reduces slipping in standard drill chucks