IRWIN Tools 1900836 Concrete Screw Drive Sleeve Compatible with Impact Performance Series and Drills Drill/drive installation sleeve slides over and engages with drill bit hex collar Compatible with all IRWIN Impact Performance Series Tapcon Installation Bits as well as most standard SDS Hex Drive Bits Manufactured with heavy-duty, cold-forged steel to withstand high torque output Black oxide finish resists corrosion and increases life of sleeve 1/4" quick-change shank is designed to work with impact drivers, and reduces slipping in standard drill chucks