Today we're going to be taking a look at the Curt Trailer Hitch Receiver and Coupler Lock set. This is a three piece lock set that deters theft of your trailer. The unit's going to feature Keyed-alike locks that make it easy to lock and unlock your setup. Comes with two keys. The couple lock, which is this unit right here, this deters trailer theft by fitting over the coupler, preventing hookup.… see more >