Armstrong Drive Socket, Standard Length, Measurement System Imperial, 1/2 in Drive, Square Drive, 8 Point Socket, 1 in Socket, 1-3/4 in Overall Length, 1-5/8 in Drive End Width, 1-5/8 in Socket End Width, 0.672 in Bolt Clearance Depth, Ball Locking, High Alloy Steel, Full Polished Chrome Plated