Armstrong Drive Socket, Standard Length, Measurement System Imperial, 3/4 in Drive, Square Drive, 12 Point Socket, 1-1/2 in Socket, 2.295 in Overall Length, 1.603 in Drive End Width, 2.098 in Socket End Width, 1-1/2 in Bolt Clearance Depth, 1.2 in Opening Depth, Ball Locking, High Alloy Steel, Chrome Plated