Having the right size socket makes any job easier. Fill in any gaps in coverage with dependable, high-quality sockets complements any toolbox. The Powerbuilt 3/4 Inch Drive 12 Point 40 MM Socket is a trustworthy 12-point Z-Drive shallow socket. The Z-Drive prevents rounding or fasteners while turning damaged fasters by contacting more of the flat surfaces of nuts and bolts. The socket is mirror-polished chrome vanadium steel for durability with forged sizing markings that will never wear off. A center hole is punched through the socket to allow for longer nuts and bolts. The socket also features precision chamfered hex faces, allowing easier mating with fasteners. Powerbuilt sockets all meet or exceed ANSI standards.