Kingston KBSA1791 Aerator for KB1751 1791 1971 1241 1431 3751 1201 1291 1231 Series, Polished ChromeKingston KBSA1791 Aerator for KB1751 1791 1971 1241 1431 3751 1201 1291 1231 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 Solid brass construction for long lasting durability Includes a water saving 2. 2 GPM restrictor 55 64" 27 UNS female threads 1 3 8"