1. 【Universal Fit for Multiple Coffee Makers】These charcoal water filters are compatible with all K 1.0 and 2.0 models, as well as Breville and Ninja DualBrew coffee machines. They also work with a wide range of older K models manufactured after 2007, including Single Cup Reservoir Brewing, K-Duo, Elite, Classic, Ultra, Special Edition, Ultimate, Platinum, K Supreme, K Slim, K-Mini, K-Express, K40, K45, K50, K55, K70, K200, K250, K400, K475, K575, BWF100, and more. (Note: Not compatible with Cuisinart coffee makers). 2. 【Premium Fine Charcoal Filtration】Each filter is packed with high-quality, organic activated charcoal granules designed to maximize exposure to water, enhancing filtration and purification efficiency. These filters effectively remove harmful contaminants from tap water, ensuring a cleaner and safer brewing process. 3. 【Advanced Micro-Mesh Material】The filters feature a precisely designed micro-mesh material that prevents activated charcoal from escaping and clogging your coffee maker. This design ensures a smooth and uninterrupted flow of water through the filter, maintaining the performance of your machine. 4. 【Improves Coffee Taste】The activated charcoal in these filters is specially formulated to remove impurities such as calcium, chlorine, sediment, and other odors from water. By purifying the water, these filters enhance the flavor and aroma of your coffee, resulting in a cleaner, purer, and more enjoyable cup of coffee while retaining essential minerals beneficial to your health.