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.