Danco 1.5 GPM faucet aerator is designed to save up to 30% more water as compared to using the standard 2.2 GPM aerator. It reduces water consumption without sacrificing water pressure. Installing a hidden aerator can be difficult, but the key included in the package makes the removal and installation of the new aerator easy. Kit includes adapters to convert a standard Delta or Moen faucet into a water saving fixture. Watersense certified.