Key Features of Our 8.5x20 Car Hauler Trailer Rental Coupler and Plug : Equipped with a durable 2-5/16" coupler and 7-pin round trailer plug for secure, easy towing connections. Payload and Weight Specs : Impressive payload capacity of 6,145 lbs and trailer weight of 3,755 lbs, with a 10,000 lb GVWR