1/4IN Drive Lock-a-Socket Metric Orange ¼ 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: 4.5mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm. SAE Size Labels: 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 7/16, 1/2, 9/16, 5/8 LAS14MO No -