Trailer Adapter takes the work out of trying to hookup a Tow Vehicle with a Trailer that does not have a matching Trailer Connector. Adapter is meant to be mounted onto Tow Vehicle that has a 7-Way RV Blade Connector. Trailers with 7-Way Round Pin can then be easily plugged into Adapter and Adapter's 7-Way RV Blade Plug is plugged into Tow Vehicle.