Proto® TorquePlus™ Socket, Deep Length, Yes Impact Rated, Measurement System: Imperial, Square Drive, 1/2 in Drive, 1-5/16 in Socket, 3-1/2 in Overall Length, 1-13/32 in Opening Depth, 1-21/32 in Drive End Width, 1-7/8 in Socket End Width, Side Locking Hole Locking, 6 Points, 2-7/8 in Bolt Clearance Depth, High Alloy Steel, Black Oxide