COMPATIBLE WITH ALL 2.0 such as K Select, K-Classic, K350, K400, K425, K450, K475, K500, K525, K550, K575, K-Cafe, Elite, K-Express, K-Duo PLUS (ONLY), K-, K-Slim, and K Iced brewing systems.NOT COMPATIBLE WITH - 2.0 K200 or K250 Machine, K225, K260, K275, , Rivo, Vue, and K-Duo Essentials. KIT INCLUDES: Parts Side Reservoir Filter Holder, retainer base, and 12-pack of charcoal water filters replacementIMPROVES COFFEE TASTE - Activated organic charcoal is specifically made to improve beverage drinking taste by removing impurities such as calcium, chlorine, sediment and other odors creating a cleaner pure irresistible best-tasting coffee while retaining all the necessary minerals for the body.EASY TO REPLACE: Hassle-free and convenient to replace and start to enjoy a TASTY cup of coffee.Colour:As ShownMaterial:plasticPackage Contents:1 x Filter Holder12 x water filterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.