Kangen Compatible HG-N Type Premium Replacement Filter Compatible for Enagic Leveluk SD501HG-N Toyo Ange Impart Water Ionizers HG-N type Replacement Filter for Kangen Enagic Leveluk Toyo Ange Impart Not fit to K8 machine Not fit to HG models (Sold before Dec 31, 2010) Made in Korea; Advanced filtration with granular actived carbon filter, Filtration Capacity: 12,000L (depending on the water quality) PLEASE VERIFY whether the center hole rim of your previous filter has two notches. If not, please DON'T buy this item. PLEASE DON'T buy this item for K8 machine.