[WIDE COMPATIBILITY]: The filter holder is with Keurig coffee machine models that use a side reservoir over 8 inches tall—including K-Brew+Chill, K-Supreme Series, K-Silm, K-Elite, K-, K-Express, K-Cafe Series, K-Duo Plus, K-Select, K-Iced, K-Duo Plus (Plus Only), K300/K400, K500/K550 [COMPLETE SET]: The water filter starter kit comes with 1 water filter holder and 2 water filter cartridges - everything you need to started right out of the [PREMIUM FILTRATION MEDIA]: Crafted with organic coconut shell activated carbon, this water filter effectively softens water and reduces chlorine, heavy metals, and other impurities, delivering better-tasting coffee and protecting your machine [EASY INSTALLATION]: Installation takes just seconds—simply soak the filter for 5 minutes, rinse under running water for 1 minute, slide it into the holder, and place it in the water reservoir. For best results, replace the filter every 2 months, or monthly with frequent use [FRIENDLY REMINDER]: Please double-check your coffee maker model before purchase to confirm compatibility and ensure a perfect fit for your keurig coffee maker