QUICK RELEASE 1/2" DR. TO 1/4" HEX SOCKET IMPACT ADAPTER DRILL CHUCK FOR AIR AND ELECTRIC IMPACT WRENCH Convert any air or power impact wrench into a drill or ratcheting wrench into a driver with this single piece chuck converter, Quick Release 1/2-Inch Square Drive to 1/4-Inch adapter securely holds any 1/4" hex-shank bit Quick-release mechanism allows for easy, one-handed swapping between bits while working, fits tightly both ends, firm grip onto the drill, and holds the bit nicely