Compatible with espresso machines including BES920XL, BES980XL, BES900XL, BES860XL, BES870XL Barista Espresso, BES840XL Infuser Espresso, BKC600XL & BKC700XL Gourmet Single Cup. Designed with multi-stage charcoal filtration and small pore size less than 0.5 micrometre, helping reduce calcium, chlorine, bad odors and contaminants. Each filter is individually sealed for replacement use. Advanced resin helps protect the coffee machine from hard water buildup. Replace the filter every 2 months or 60 water tank refills (sooner for hard water) to maintain beverage flavor. Material: Fiber + coconut shell activated carbon. Color: as shown. Package Contents: 6 activated carbon filter cores. Only the above package content included. Note: Light and different displays may cause slight color difference; measurement error allowed +/-1-3cm.