This set of charcoal filter refills by Keurig improves the water quality and prolongs the life of your machine. The cartridges give you better tasting coffee by removing impurities from the water. The water filter cartridges are to be used with the Keurig water filter and comes in a pack of six, giving you a one year supply. For use exclusively with the Keurig Single-Cup Brewing Systems purchased after August 2007
