• 3/8” 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
• Metric Size Labels: 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm
• SAE Size Labels: 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1"