ENHANCED TASTE AND PH: Replaces taste-enhancing minerals removed during the normal RO process. GOOD-FOR-YOU MINERALS: Adds minerals like electrolytes, calcium and magnesium back into your filtered drinking water. MULTI-STAGE FILTRATION: Offers a 7th Stage of filtration, to be used only with Clarifi Tankless Reverse Osmosis System (DWQ1001012) EASY, DIY MAINTENANCE: Carbon and RO filters and optional remineralizer cartridge have a two-year lifespan so you can replace them at the same time quickly and easily - it takes less than a minute to replace each. VIDEO TUTORIALS: Find more information in the included user guide, M&I, and Delta Faucet’s YouTube. LIVE CUSTOMER SUPPORT: Backed by Delta Faucet's warranty and highly-trained, live customer support