The Model DL-80 lock-rod cam and keeper lock ? for cargo, stock, vehicle and utility trailers, as well as tractor-trailers and ocean containers – designed to protect the contents of enclosed cargo trailers. It will secure most rear doors and front personnel doors, and fits on both vertical and horizontal lock-rods. Covers the bolt head at the top and bottom for added security. Recessed lock tumbler push button. Pull ring for easy pin removal. Ring designed to break loose if forced. Locks are not keyed alike.