1. Universal Fit (NOT Cuisinart) - These Keurig compatible filters made by K&J will fit Keurig coffee makers, including Keurig 2.0 machines as well as Keurig Single Cup Reservoir Brewing and any of the following machinces: Elite,Classic, Ultra, Special Edition, Ultimate, Platinum, B40, and B70. WILL NOT FIT "KEURIG-CUISINART"2. Micromesh Material - Ensures the charcoal stays in the filter and does not clog up your Keurig coffee maker. K&J is the highest quality of any filter currently sold 3. Improves Beverage Flavor - Removing impurities, calcium, chlorine, and odors with activated charcoal filters creates the best-tasting beverages.4. Eco-Friendly Packaging - We ship your Keurig compatible filter replacements not in a bulky box, but individually sealed with minimal packaging.5. Fine-Grain Charcoal - Finer charcoal granules increase the surface area exposure to water and maximize the effective filtration. K&J makes the most effective replacement cartridge for a Keurig water filter on the market