This compact, lightweight, 7 inch wrench with insulation to the socket head has a hollow shank that extends 2½ inches over a 3/16 inch stud and 1 7/8 inches over a 5/16 inch stud. It is designed for use as a ½ inch socket wrench or as the handle for the following screwdriver and socket adapters: 16022 - Screwdriver, 16025 - Socket 3/16 in, 16027 - Socket 3/8 in.