Kingston KBSA621 Aerator for KB101 111 161 181 461 491 571 621 6151 6251 Series, Polished ChromeKingston KBSA621 Aerator for KB101 111 161 181 461 491 571 621 6151 6251 Series, Polished Chrome Installed at the ends of household faucets, aerators are designed with mesh screens to reduce splashing and dripping in sinks. A mixture of water and air is delivered while also helping to conserve water. Features Fabricated from high quality brass and ABS material Includes a water saving 2. 2 GPM restrictor 55 64" 27 UNS female threads Low Lead Compliant