DoubleLok Technology ensures both ends of bit lock securely in impact drivers and quick change chucks, enabling use of two tips from one bit for added convenience and extended life. 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, Model No 1903524 (SKU 301944). Manufactured with heavy-duty, cold forged, high grade steel to withstand high torque output.
Thunderbolt web provides longer life and faster drilling time. Parabolic flutes clear chips fast and easy. 135 deg. split point provides precision starts with no bit walking. For drilling wood, metal, plastic. Sizes 1/8" and smaller have 2 bits per card. 9/64" and larger are 1 bit per card.