CRESCENT® Socket, System of Measurement: Imperial, Hex Tip, 3/8 in Drive, 9/16 in Socket, Standard Length, 0.98 in Overall Length, 0.53 in Opening Depth, 0.74 in Drive End Width, 0.74 in Socket End Width, 12 Points, 0.496 in Bolt Clearance, Alloy Steel, Finish: Full Polished Chrome