Do It Best Do It Duo-fit 2.0 Gpm Water Saver Aerator, Chrome-plated W-1137lf

Fits faucets with 55/64" x 27 tpi (threads per inch) outside threads or 15/16" x 27 tpi inside threads. Controls volume to 2.0 GPM. Manufactured to include no more than 0.25% weighted average lead content on wetted surfaces.