Note: Special Handling Fees ApplyZip’s Aluminum Angle 4″ x 4″ x 50″ long, .375″ thick. Use this aluminum angle when towing a road tractor from the rear with your heavy duty under lift or truck hitch. Lightweight aluminum angle for use between the frame and hitch chains when towing a truck chassis from the rear with a conventional tow bar A great item to have to use under a rollover belt to distribute the load on a box truck or trailer