This has been sitting in my spare basement tool box. New never used. Proto® TorquePlus™ Socket, Deep Length Universal, Yes Impact Rated, Measurement System: Metric, Square Drive, 3/8 in Drive, 13 mm Socket, 2-1/32 in Overall Length, 13/32 in Opening Depth, 15/16 in Drive End Width, Side Locking Hole Locking, 6 Points, 1-1/32 in Bolt Clearance Depth, Alloy Steel, Black Oxide