The Phantom Window Works Goblin Glide RODI 80 Cart is a three stage pure water filtration system made of the highest quality components. This cart is made to be the last pure water cart you will ever buy. We offer a lifetime warranty on the aluminum substructure and the cartridge housings. The Dual 40" RO filters, 40" DI and 40" Carbon allow for filtering higher TDS water. The tires are flat free, solid rubber construction so you don't have to worry about filling them up with air. Also comes with a pole holder on the front for your pure water window cleaning pole.