Five convenient sizes from 5 to 30 Gallons provide a capacity for every need. Blow-molded polyethylene construction and quality zinc plated steel brackets throughout. Extra large, heavy-duty wheels and standard bayonet fittings included on all tanks except 5 Gallons size. Tow bracket and 5 Feet sewer hose included with 15, 22, and 30 Gallons Tote-Alongs. All original Tote-Alongs come completely assembled.