CRESCENT® Socket, System of Measurement: Metric, Hex Tip, 3/8 in Drive, 9 mm Socket, Standard Length, 0.94 in Overall Length, 0.28 in Opening Depth, 0.65 in Drive End Width, 0.53 in Socket End Width, 12 Points, 0.3 in Bolt Clearance, Alloy Steel, Finish: Full Polished Chrome