The Valterra Silverback 21-Gallon RV Tote Tank w/ 2-Wheel Transport Kit (ST-5212W) is a professional-grade, silent protector for RV waste management. Designed to eliminate common dumping frustrations, this 21-gallon tote tank features a heavy-duty blow-molded construction, airless rubber tires on reinforced fiberglass wheels, and the patent-pending Tow-N-Pull handle for effortless, ergonomic towing. Its ClearView fill window shows precise fill levels without exposing contents, while the 360° directional vent and jet-spray cleanout port make filling and rinsing simple, fast, and odor-free. Complete with a quick coupler, 3 sewer hose, and 360° rotating bayonet adapter, the Silverback is ready to use straight out of the box and backed by a 3-year limited warranty. Key Features:• 21-Gallon Capacity â Ideal balance of size and maneuverability• Tow-N-Pull Handle â Adjustable full-hand grip locks securely to all standard hitch sizes• ClearView Fill Window â See exact fill levels without opening the cap• 360° Vent & Jet-Spray Cleanout â Direct venting and high-powered rinse for odor-free cleaning• Airless Rubber Tires â Roll over gravel, dirt, and uneven terrain with zero flats• Complete Kit â Includes tank, quick coupler, 3 sewer hose, 360° rotating bayonet adapter, and two termination caps• Hitch Compatibility â Fits 1-7/8 , 2 , and up to 2-5/16 balls• 3-Year Limited Warranty â Durable, professional-grade construction Enjoy flat-free performance with durable airless tires Simplify cleanup with the built-in jet-spray rinse system Choose the right capacity for your RV & camping style | Valterra Silverback 21-Gal RV Waste Tote Tank with 2-Wheel Kit