MaxxHaul 70085 7-Way RV Blade to 4-Wire Flat Adaptor. Eliminates the Need for Multiple Plugs and Adaptors to Tow Various Vehicles 7-Way to 4-Way Adaptor Does the Job of Otherwise Multiple Plugs and Adaptors Brass Connectors Enables for Solid Electrical Conductivity Weatherproof Molded Construction Eliminates the Need for Multiple Plugs and Adaptors to Tow Various Vehicles 7-Way to 4-Way Adaptor Does the Job of Otherwise Multiple Plugs and Adaptors Brass Connectors Enables for Solid Electrical Conductivity Weatherproof Molded Construction