Features The Proto® socket bit has a hex opening that allows the bit holder to take the torque load. Made from a heat-treated alloy for wear resistance which minimizes distortion for a long life. Polished chrome finish. Made in USA. Insert Length / 2 inch Tip Size / 5/8 inch Overall Length / 4 inch Drive Size / 1/2 inch Socket Depth / Standard Material / Alloy Steel Finish / Full Polished Chrome Number of Points / 6