We have a DMI 400 gravity wagon. Very heavey duty built wagon. Thick steel. Huge flotation tires in very good shape. Spring assisted tongue. Wheel bearings have external grease fittings. Wagon has factory extensions. Has brakes on rear wheels not sure if they work. I have pulled this wagon 45 and 50 mph with no problem empty. Barry call or text 334 twosix8 2926