Several convenient sizes 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 gallon size. Tow bracket and 5 sewer hose included with 15, 22, and 30 gallon Tote-Alongs. All original Tote-Alongs come completely assembled.