This Husky Towing Multi Tow Trailer Wiring Connector Adapter connects 4 wire flat to 7 blade and 4 flat end. Specifications•End Type: 4 Flat To 4 Flat And 7 Blade•Color: Black Easy-Open, Weatherproof Lid With Rugged, Oversized Hinge Allows Lid To Open 180 Degrees Allows Existing Vehicle End 4 Flat To Adapt To A 7 Blade Features Sockets For Both 7 Blade & 4 Flat Trailers | Husky Towing Endurance Multi-Tow 4-Way to 7-Way Blade & 4-Way Flat Connector Adapter