Danco 10493 Dual Thread Aerator, ChromeAerators attach to your faucet to reduce the gallons per minute used out of kitchen and bath faucets, while still maintaining a normal pressure. Aerators are a great way to reduce your water usage and utilities bills at the same time. Highlights: 15 16" male or 55 64" female dual thread (fits 90% of all faucets). Reduces water flow to 1. 5 gallons per minute (GPM). Cyclone Force technology allows you to save water without sacrificing water pressure.