Performance - Removing impurities, calcium, chlorine and odors with activated carbon filters creates the best tasting beverages ULTRA FINE-GRAIN CHARCOAL - Finer charcoal granules increase surface water exposure and maximize effective filtration FITS ALL CUISINART MACHINES - These compatible filters made by will fit all coffee makers, both newer and older machines FINE CHARCOAL FILTRATION - Premium organic activated carbon granules are designed to increase water exposure and maximize filtration and purification efficiency. The filters are made of high quality charcoal quality that purifies water from harmful contaminants 12 Combo Pack - 12 Activated Carbon Water Filter Packs. Our filters are individually wrapped, so your filters stay fresh. For best filtration results, water filters should be replaced every 30 days or 30 refills tank