GearWrench Drive Socket, Deep Length, Measurement System Imperial, 1/2 in Drive, Square Drive, 12 Point Socket, 7/8 in Socket, 3.031 in Overall Length, 1.173 in Drive End Width, 1.173 in Socket End Width, 0.453 in Bolt Clearance Depth, 0.52 in Opening Depth, Steel, Full Polished Chrome Plated