Wright Tool Socket, Shape I Standard Length, Series, Measurement System, Square Drive, Drive Size, in 1/2, Socket Size, in 3/8, 1-1/2 Overall Length, Opening Depth in, in 5/32, 7/8 Drive End Width, Socket End Width in, in 39/64, Ball Locking, Number of Points, Bolt Clearance Depth, Alloy Steel, Finish.