CRESCENT® Socket, System of Measurement: Imperial, Hex Tip, 3/4 in Drive, 1-3/8 in Socket, Standard Length, 2.18 in Overall Length, 1 in Opening Depth, 1.86 in Drive End Width, 1.86 in Socket End Width, 12 Points, 0.783 in Bolt Clearance, Alloy Steel, Finish: Full Polished Chrome