Claris water filter for Sage Barista espresso machines. Fits Barista Express, Barista PRO, Barista Touch, Bambino Plus. Also suitable for Oracle, Oracle Touch and Dual boiler. This water filter is a very important component and should always be in your water tank. The water filter reduces water hardness and prevents metals and other substances that can affect the coffee taste. Replace the water filter every three months to ensure high filtration performance.