Irwin Tools 1899925 Impact Performance Series TORX Power Bit Pocket Set (5 Piece) IMPACT Performance Series Power Bit Sets 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