Product Content You will receive 6 pieces resin water filters, in sufficient quantity to meet your daily and replacement needs. IMPROVE WATER QUALITY Using our water filter can effectively improve water quality, eliminate chlorine taste and bad odors and ensure the best taste of coffee and espresso. Ion exchange resin technology: removes calcium, magnesium and other minerals through ion exchange, effectively softens hard water and prevents scale build-up in coffee machines. REGULAR REPLACEMENT & MAINTENANCE Please replace the filter cartridge every 2 months or after 60 refills of the water tank, and more frequently in areas with hard water. This optimizes the performance of the coffee machine. Compatibility : The filters are compatible with Breville BWF100 / 870 / 878 / 880 / 860 / 840 / 810 / 450 / 500 coffee machines. Please note that our product is not sponsored or endorsed by, or affiliated with any brands to which it is suitable, including Breville.