IRWIN Tools IMPACT Performance Series Screwdriver Power Bits, Assorted Square, 2-inch length, 5-Piece Set with Magnetic Screw Hold Attachment (1903620) 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