.Professional grade universal ratchet socket set, comes with a 3/8" power drill adapter
.Chrome vanadium steel construction, Internally by 54 high-carbon steel hardness pole constituted
.Fits standard 1/4 to 3/4-inch and metric 7-19mm nuts and bolt heads
.Self-adjusts to fit thousands of fasteners, make it easy to remove and replace irregular fasteners
.Automatic standard and metric application; Unscrew various shapes nuts, screws, hooks, lag screws and bolt heads ect.