Quick Release & Security Lock Design: 1/2 Inch Square Female to 1/4 Inch Hex Female Socket Adapter Convert any air or power impact wrench into a drill or ratcheting wrench into a driver with this single piece chuck converter Quick-release mechanism allows for easy, one-handed swapping between bits while working Adapter securely holds any 1/4" hex-shank bit (including insert bits) Made of high quality material for maximum strength and durability.