Simply insert into the trailer coupling, latch it in place with your normal coupler, use the provided hex tool to expand the lock, and insert the key barrel and lock it.
The Trailer Lock cannot be removed except with the key.
As part of your overall trailer, boat or RV security plan.
2" Coupler gives you confidence that your trailer cannot simply be hitched to someone else's towball and driven away.
Please note that other controls are required for all round trailer security and property protection.