Armstrong Socket, Deep Length, Series, Yes Impact Rated, Measurement System, Square Drive, Drive Size, in 1, Socket Size, in 1-1/2, 3-1/2 Overall Length, Opening Depth in, in 7/8, 2-1/4 Drive End Width, Socket End Width in, in 2.312, Number of Points, Bolt Clearance Depth, in 1.078, High Alloy Steel, Finish