Danco, Inc. 10492 Dual Threaded Extreme Water Saving Faucet Aerator, 15/16-27 Male X 55/64-27 Female, 0.25 GPM, Chrome Saves up to 30% water consumption Watersense certified 1.5 GPM Small male thread 13/16 in.-27M Cyclone aerated stream which reduces water consumption without sacrificing water pressure Twisting spray pattern Annual replacement insert Complies with the reduction of lead in drinking water act