Armstrong Socket, Standard Length, Series, Measurement System, Square Drive, Drive Size, in 1/2, Socket Size, in 3/8, 1.455 Overall Length, Opening Depth in, in 0.4, 0.86 Drive End Width, Socket End Width in, in 0.6, Ball Locking, Number of Points, Bolt Clearance Depth, in 0.281, High Alloy Steel, Finish