High Quality Material: Faucet aerator, water saver for faucet. Made of ABS + stainless steel. The faucet water saver is corrosion resistant, does not rust, and has no peculiar smell. Water Saving: Faucet aerator can completely mix water and circulating air to form a foaming effect. The water flow is gentle, steady, and non-splashing, providing water savings of approximately 30% to 40%. Five-Layer Filtration: Water-saving faucet aerator. After layer-by-layer filtration, the kitchen faucet nozzle can filter most sediment and impurities in the water, making the water cleaner and safer to use. Easy Installation: Kitchen faucet nozzle. The included faucet wrench allows for direct tightening, or use a coin through the notch under the faucet. Suitable for easy installation, even for beginners. Scope of Delivery: 3 sink faucet aerators M18.5, 1 faucet key. Suitable for faucets with internal threads, such as kitchen sink faucets, basin faucets, and bathroom faucets.