Proto® TorquePlus™ Socket, Standard Length, No Impact Rated, Measurement System: Metric, Square Drive, 3/8 in Drive, 16 mm Socket, 28.5 mm Overall Length, 13.5 mm Opening Depth, 22 mm Drive End Width, 22 mm Socket End Width, Ball Locking, 12 Points, 11 mm Bolt Clearance Depth, Alloy Steel, Full Polished