Note : 1 - Please check the video for detailed installation steps. 2.Please check whether your own faucet style meets the installation requirements before placing your order. 3 - We always adhere to the concept of customer service. Material : PVA non-woven fabric + zeolite + Maifan stone + calcium sulphite + coconut shell natural activated carbon + PVA non-woven fabric, six layers of water filtration, absolutely safe, no secondary pollution, non-toxic. Improve Water Quality : Removes heavy metals from chlorine and other impurities in water, improves water quality, makes water softer and safer. Ergonomic Design : Compact and convenient, suitable for faucet diameter 0.6-1.1 inch. Used in home kitchen, bathroom and any place you need. Splash Proof & Water Saving : Uniform size of filter holes, you don't have to worry about splashing, it has the functions of filtering, anti-splash and water-saving.