This set of charcoal filter 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 following Keurig Single-Cup Brewing Systems purchased after August
2007: ELITE B40 CLASSIC B44 ULTRA B50 SPECAIL EDITION B60 ULTIMATE B66 PLATINUM B70 B140 OFFICEPRO B145 KEURIG 2.0