Five-layer filtration: This water-saving faucet aerator has a built-in five-layer filter, two layers more than similar products on the market, which can better filter out impurities and ensure hygienic and safe water use. Suitable for kitchen and bathroom faucets. Save about 30-40% water: This economical kitchen faucet aerator can fully mix water with flowing air to form a foam effect, improve cleaning power, and thus reduce water consumption. Faucets equipped with aerators save about 30-40% water compared to faucets without aerators. Splash-proof, soundproof, constant flow: After mixing with air, the water flow becomes smoother, reducing impact and preventing water droplets from splashing. Therefore, the kitchen faucet can also provide a good constant flow and noise reduction. Good sealing: There is a tight sealing ring on the outside of the faucet aerator nozzle to prevent water from splashing sideways. At the same time, 2 socket wrenches are included in the package. You only need to tighten the faucet aerator with a wrench, and the entire installation process is very convenient. Package list: You will receive 6 faucet aerators and a wrench. Depending on the water quality in your area, for the hygiene and safety of your water, it is recommended to replace the aerator directly every 3-6 months.