• 1/2” Drive Lock-a-Socket
• New Locking Strip Allows Locking Posts to Lock Sockets & Lock the Locking Posts in Place on the Rail
• Magnetic Rail adheres to ferrous metal surfaces
• SAE Size Labels: 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/15", 7/8", 15/16", 1", 1-1/16", 1-1/8", 1-3/16", 1-1/4", 1-5/16"