Faucet Water Purifier Features a built-in filter layer with activated carbon from coconut, zeolite, PVA non-woven fabric, calcium sulfite, and rubber. Ideal for purifying hard water and well water. Promotes a healthy lifestyle by removing chlorine, heavy metals, and other impurities, making water sweeter and safer. Easy to Clean A must-have for home and office, 100% new and high quality. Resistant to high temperatures and not easily deformed. To clean, simply remove the filter and rinse it under water. Water Saving Made from soft rubber material to prevent water leakage and save water with every use. Widely Applicable Suitable for most elongated sink faucets with an applicable faucet outlet diameter of 16-23 mm. Compatible faucets include: single-hole sink faucets, double-sided sink faucets, shower faucets, bathtub faucets, and kitchen faucets. Comes as a 3-pack of faucet installation filters, tap water purifier cleaner for kitchen faucets with activated carbon to remove chlorine, fluoride, heavy metals, and for hard water in homes and bathrooms.