Armstrong Impact Socket, SAE Standard Length, 1-1/2 in Socket, 3/4 in Drive, Squared Drive, 2-1/4 in Overall Length, 6 Points, 1-3/4 in Drive End Width, 2-1/4 in Socket End Width, 1-1/8 in Bolt Clearance Depth, 1 in Opening Depth, High Alloy Steel, Black Oxide