Demco Locking Plate For 5Th Airborn Extended Pinbox 6062. Locking plates are required for Demco Glide Ride MORryde Trailair Tri Glide Trailair Flexair Trailair Rota Flex and 5th Airborn Pin Boxes. The Demco 6062 Locking Plate is for use with Demco's...