7 Way RV To 4 Flat Or 6 Round Adapter, For A Vehicle With A 7 Way RV Blade Style Towing Connector To Allow A Trailer With A 4 Way Flat, 5 Way Flat Or 6 Round Style Towing Connector To Hook Up To The Vehicle To Make The Stop/Tail/Turn Lights & Electric Brakes To Function While Towing The Trailer, Made Of High Impact Plastic To Reduce Corrosion.