By adding this inline filter as final stage in RO system, you get the optimum benefit of the alkaline-mineral media.With this addition, you turn your existing reverse osmosis system into a spring water source with all alkaline and antioxidant qualities.This alkaline antioxidant filter provides abundant Active Hydrogen.It also increases reduction power by increasing pH, making small water cluster and providing beneficial minerals such as calcium, magnesium, potassium and sodium.Length: 25cm , O.D.= 7.3cm 0.6cm Fitting Weight: 0.9kg Service life: 5678.1ls.