Durable material: The faucet aerator is made of ABS plastic steel, rust-proof and corrosion-resistant. High-quality plastic seal prevents water leakage.Water-saving and splash-proof: Pressure compensation or water flow restriction device, the faucet with bubbler can save about 50 percent water. And it can make the water sparkling and soft, prevent the water from splashing and reduce the noise of the faucet.Constant water flow: When the water pressure is too low, the faucet aerator can ensure a certain quantity of water. They limit water flow when pressure is too high and stabilize water flow when pressure is unstable. It is a good helper for your home.EASY INSTALLATION: No other tools required, just tighten the bubbler directly by hand or use a vent wrench to tighten it. Recommendation: Replace or clean the aerator every six months to prevent impurities from damaging the water flow. Package: 6 M21.5 faucet aerators and 2 universal faucet aerator wrenches. The faucet bubbler is suitable for installing and replacing faucets in homes, hotels and public establishments. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.