American Standard 066070-0020A Aerator, 2.2gpm/8.3L/min. Max and 15/16-Inch Male Threads, Polished Chrome 2.0 gpm maximum flow aerator with 15/16-Inch x 27 male thread For use with American Standard single handle kitchen faucets For use with American Standard Monterrey, Heritage and Serin bathroom faucets Polished chrome finish