Faucet Water Filter - This hard water softener filter cartridge can remove chlorine, heavy metals (lead, mercury, nickel, chromium), ammonia odor, rust, and other impure sediments that cause hard water. Enjoy the cleanest water possible, reliable protection for your family. Pure and Solid Materials - Carefully compare our original faucet filter replacement cartridge with cheaper models and you'll immediately see that we use the BEST materials - IMPROVED calcium sulfite - get the best, enjoy the cleanest water. Tool-Free Installation - Designed to attach to the filter faucet. When it's time to replace the faucet water filter cartridge, there's no need to get out the toolbox. Our replacement faucet water filter is easy to install and requires no tools. Economical - Made of high-quality PP cotton, it won't clog even after prolonged use. Replace the filter regularly based on the amount of water used; we recommend an interval of 6-8 weeks. 5-piece replacement filter cartridge for the