KANGEN Compatible HG-type Replacement Ionizer Filter for Enagic MW-7000 Leveluk SD501 Toyo Ange Impart by IonHiTech HG-type Replacement Filter for Kangen Enagic Leveluk Toyo Ange Impart NOT Compatible with K8 and HG-N type Models Sold after Jan 1, 2011 (SD 501 Platinum, SD 501HG-N, etc) Compatible Models: Leveluk SD 501, DX, DX II, SD 501U, SD 501HG, Super 501, Jr., JR II, & SunUs Filtration Capacity: 12,000L (depending on the water quality); Made in Korea If you got the manufacturer cleaning service, PLEASE VERIFY if your current filter nipple is completely round! If it has TWO NOTCHES, please DON'T BUY this item! You need the HG-N type filter.