Cleansui faucet-mounted water purifier, with 3 replacement filters, compatible sizes W22, M22, W23, M24. - Model: CBC03Z - Included: 3 replacement filters - Compatible sizes: W22, M22, W23, M24 - Functions: Water purifier, replacement indicator I am selling this because I moved and no longer need it. The main unit is used and is a used item, but the cartridges are new and unopened. Please purchase only if you understand that this is a used item.