GP® Socket, Standard Length, Series, Yes Impact Rated, Measurement System, Hex Drive, Drive Size, in 1/2, Socket Size, in 5/16, 2.95 Overall Length, Opening Depth in, in 0.98, 0.98 Drive End Width, Socket End Width in, Number of Points, Bolt Clearance Depth, in 2.01, Chrome Molybdenum Steel, Finish