This 1.5 GPM Water Saving On/Off Faucet Aerator by NEOPERL is engineered with an up/down lever to control the amount of water flow you want for the job. Use the lever when you need a short interruption of flow while rinsing dishes or washing vegetables. The down position allows for a good strong flow while the up position provides a small trickle to avoid wasting water and prevent water pressure build up. This product has an attractive brushed nickel finish with an anti-liming Honeycomb screen aerator that produces a soft aerated water flow. Our product is WaterSense certified and can save you up to 30% water compared to using the standard 2.2 GPM aerator.