This 1 gpm faucet aerator by Danco has innovative features. It has cyclone technology which reduces water consumption without sacrificing water pressure. This faucet aerator is WaterSense? certified and can save you up to 55% water as compared to using the standard 2.2 gpm aerator. It has a removable/replaceable insert with a twisting spray pattern and will work on any faucet. Dual threads fit 15/16 in-27M or 55/64 in-27F.