High Quality: The column is made entirely of stainless steel using chrome vanadium steel tubing. High strength and a strong, high-strength core provide reliable and durable tools for efficient and practical applications. Individual hardened steel springs, forged with superior heat treatment, hold the screwdriver bits tightly and seamlessly so they don’t slip. The key to universal socket is the strongest in honeycomb design. You can choose the size of the screw/nut according to your space needs to save time. 19mm Fits standard 1/4-through nuts and bolts; 3/4 inch and metric from 7 to 3/4 inch. 19mm Self-adjusting design makes it easy to grip hex nuts, bolt eyes, hooks, turnbuckles and bolt heads. Removable screw, rotating hook. Disassembly of screws, irregular disassembly of screws. Remove the damaged faucet. and tighten the knob. 105° to an electric drill, a rechargeable electric drill or a wrench; manual, screw or swivel nut that extends into a narrow, inaccessible space. Perfect