A set of socket adaptors for Impact Drill / Drivers with a 1/4" Hex shank drive. Enabling sockets to be used with drills, drivers, screwdrivers etc. The 1/4" (6.35mm) hex shank allows the adaptors to be used with Impact Drill / Drivers with a quick release systems or with a suitable chuck. Hardened Chrome Vanadium with a phosphate finish for strength and protection. 1/4" Hex Shank to 1/4" Square Drive: 25, 30, 50 and 65mm long 1/4" Hex Shank to 3/8" Square Drive: 50 and 65mm long 1/4" Hex Shank to 1/2" Square Drive: 50 and 72mm long The spring ball lock ensures a tight fit Hardened CR-V with phosphate finish For use with all Impact Drill / Drivers Universal 1/4" Hex shank