Compact Lightweight design, fast and very simple to fit, introducing the Milenco AKS 3004 Compact Hitchlock! The lock fits both hitched and unhitched, but not to be used not to be used on the hitch whilst towing. These Hitchlocks have been engineered and designed to be the strongest yet most compact Hitchlocks ever made. Produced from heavy-duty steel once in place the lock is design to prevent tow-away theft of your trailer or caravan. SCM MP03 Approved