Moen 3924 Collection 2.2 GPM Female Thread Aerator, ChromeThreaded faucet aerators and flow restrictors thread onto faucet spouts. They typically consist of a mesh screen within a fitting that attaches to the end of a faucet spout. Aerators mix air into the water stream to reduce water use while maintaining pressure. Key Features: VERSATILE DESIGN: Chrome finish is highly reflective for a mirror like look that works with any decorating style. ADA COMPLIANT: Complies with Americans with Disabilities Act (ADA)