CRESCENT® Socket, System of Measurement: Metric, Hex Drive, 1/4 in Drive, 12 mm Socket, Deep Length, 2 in Overall Length, 0.7 in Opening Depth, 0.66 in Drive End Width, 0.66 in Socket End Width, 6 Points, 0.2 in Bolt Clearance, Alloy Steel, Finish: Full Polish Chrome