Proto® TorquePlus™ Socket, Standard Length, Yes Impact Rated, Measurement System: Metric, Square Drive, 3/8 in Drive, 11 mm Socket, 26.2 mm Overall Length, 10.3 mm Opening Depth, 17.3 mm Drive End Width, 17.3 mm Socket End Width, Side Locking Hole Locking, 6 Points, 13.5 mm Bolt Clearance Depth, Alloy Steel, Black Oxide