A set of 3 activated charcoal water filters that work with Viking coffee maker. Filter is designed to replace partVCCM12F. It helps removing up to 82% of the chlorine and other impurities found in tap water. It's been proved to improve the taste of the water and coffee. These filters have been approved and certified by USA governmnet FDA and European ROHS. We suggest to replace the filter for every 2 months to maintence a good taste of water.