Built for maximum durability and long life with impact drivers. DoubleLok Technology ensures both ends of bit lock securely. Precision tip geometry delivers superior fitment, reducing stripping and camout. 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. Length 2-1/2”. 2-pack.