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 Maintance: 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;For cold water use only;In-line installation;Includes two 1/4" to 1/4" push to connect adapters for quick installation