POLLAK 12-717EP 6-Way Round Pin to 4-Way Flat Adapter Converts 6-way Round (Pin Style) Connectors Socket to a 4-way Flat (Pin Style) Connector Plug Allows one vehicle to tow utility trailers or boat trailers Adapter has non-corrosive glass-filled nylon shell and fits all 6-way sockets Full-length plug shell ensures positive latching with socket Eliminates makeshift jumpers