This 1.5 GPM Faucet Aerator has new Innovative Features. It has Cyclone Technology which reduces water consumption without sacrificing water pressure. This Faucet Aerator is Water Sense Certified and can save you up to 30 percent water as compared to using the standard 2.2 GPM Aerator.Small dual aerator removable replacement insert,Annual replacement insert,Watersense certified,Cyclone aerated stream which reduces water consumption without sacrificing water pressure,Twisting spray pattern,Complies with the reduction of lead in drinking water act,0.7 in. outer diameter