Use your semi-tractor to pull a 5th wheel trailer, a gooseneck trailer or a tongue pull trailer all with the same truck. This unit attaches behind your semi-tractor`s 5th wheel hitch. Standard color is high gloss black but optional colors to match your truck are available. 30,000 lb. rating. It can be installed in your own shop or bolted on by the factory in Blanchard, Oklahoma.