Usage Tips:5-Layer Filtration: This water-saving faucet aerator features a built-in 5-layer filter, which is two layers more than similar products on the market, providing superior filtration of impurities for water hygiene and safety. Suitable for kitchen and bathroom faucets.Approximately 30-40% Water Saving: The kitchen faucet aerator thoroughly mixes water and air to create a foaming effect, enhancing scrubbing power and reducing water consumption. A faucet with an installed aerator saves about 30-40% more water than one without.Splash-Proof, Silent, Constant Stream: By mixing water with air, the stream becomes softer, reducing impact and preventing water from splashing everywhere. This sink faucet aerator also ensures a consistent water flow and reduces noise.Good Sealing: The faucet aerator nozzle has a tight sealing ring on the outside to prevent water from splashing sideways. The package includes 2 wrenches for easy installation; simply screw on the faucet aerator with the wrench for a convenient setup.Package List: You will receive 6 faucet aerators and wrenches. Depending on your local water quality, it is recommended to replace the aerator every 3-6 months for sanitation and safety.