Armstrong Impact Socket, Deep Length SAE, 1-1/4 in Socket, 1/2 in Drive, Squared Drive, 3-1/2 in Overall Length, 6 Points, 1-3/4 in Drive End Width, 1-3/4 in Socket End Width, 1.13 in Bolt Clearance Depth, 1.16 in Opening Depth, High Alloy Steel, Black Oxide