【Easy Replacement】Effortless twist-and-lock filters without cutting off the water supply. It takes only seconds to finish with no tools needed, which is truly time saving and energy saving. 【Fast flow 】Provides RO quality water of up to 800 gallons per day, with up to 2.5:1 pure water to waste water ratio. It's 5x more efficient than a traditional RO membrane. 【High Effectiveness】 Rejects a wide spectrum of impurities down to 0.0001 micron. Also removes heavy metals and many organic matters. 【Lifetime】Up to 24-36 months filter life depending on daily usage and the quality of the water. 【Compatibility】Compatible with RO800G Tankless RO Reverse Osmosis Water Filtration System.