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