Today were going to have a look at one of Atwoods Trailer Couplers. This is part number 80060. This coupler is a weld-on coupler designed for 3-inch channel tongue trailers. Theres a rectangular opening here where you can set the trailer coupler on top of your channel tongue and then weld it into place. Well go over the interior width measurement and its designed to fit 3-inch tongues. It was… see more >