Water saving: The faucet bubbler can fully mix the water and air flowing through the bubbler, create a foam effect, improve flushing performance and reduce water consumption. A faucet equipped with a bubbler can save about 40 percent water.Constant water flow: The mixing nozzle aerator ensures a certain water output when the water pressure is too low, limits the water output when the water pressure is too high, and stabilizes the water output when the water pressure is unstable.EASY TO INSTALL: For assembly No tools are required, so assembly is super easy. Unscrew the old aerator and install the new one - done.Splash protection and noise reduction: The perfect air flow design in the water saver of the faucet attachment, the hollow part of the filter element is mixed with air, the water flow is soft, the impact is reduced, the water column is smooth and the water column is vertical to avoid splashes.Package contents: Bubbler set, 2 pieces. Very water-saving high-tech lime aerator M22. Assembled without a key. Suitable for tap attachments on kitchen and bathroom sinks.