Compatible with HG-type | Compatible with "MW-7000HG" filter; NOT Compatible with "K8" and "HG-N" type Models Sold after Jan 1, 2011 (SD 501 Platinum, SD 501HG-N, etc) | Compatible with 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.