Handles located on all four sides for easy lifting, storing, and positioning Rugged all-terrain wheels with ball bearings for smooth pulling Integrated tow handle that connects to vehicle hitch for easy towing The industry‚Äôs lowest fill height of 6‚Äù cooperates with even the lowest RV waste valves Titan Sewer Hose included and stays securely attached to tank with bayonet fitting Corner outlet for fast, thorough drainage Unique 90Degree elbow valve, on the 4-wheel models, to provide superior flow control while emptying AutoStop™ level gauge prevents overfilling