Product Description 1. The set includes: 6 resin filter cartridges suitable for coffee machines. 2. Compatible Models: BES920XL, BES980XL, BES900XL, BES860XL, BES870XL Barista Espresso, BES840XL Infuser Espresso Machine, and BKC600XL, BKC700XL Gourmet Single Cup Brewer. 3. Superior Quality: All filter cartridges are made of resin, effectively protecting your coffee machine from hard water deposits while removing odors and minerals such as chlorine, sulfur, and iron, and softening hard water through ion exchange. 4. Convenient and Safe: These coffee machine filter cartridges are extremely easy to use, designed to simplify the filter replacement process. Each filter cartridge is individually sealed and contains sufficient resin beads to ensure you get the best user experience.