This 20-stage shower filter utilizes ceramic balls, activated carbon, calcium sulfite, and other filtering materials to purify water. It effectively reduces chlorine, fluoride, heavy metals, rust, sand, and other sediments while inhibiting scale growth in the bathtub. The package includes two replaceable filter cartridges, with one pre-installed. A single cartridge can typically serve a family of four for approximately 6-8 months. The filter removes unpleasant odors and impurities, which can help reduce dry and itchy skin and is suitable for those with sensitive skin, children, and pets. It features a standard 1/2-inch thread for universal compatibility with most rain shower heads, fixed shower heads, and hand showers. Please confirm your fixture size prior to purchase. The filter maintains existing water pressure and is easy to install within minutes without tools. The package includes tape and two rubber washers to prevent leakage. Color: Silver Material: ABS Package Contents: 1 Shower Filter 2 Replaceable Filter Cartridges 2 Washers 1 Tape Only the listed package contents are included.