Do it Duo-Fit 2.0 GPM Water Saver Aerator, Polished Brass

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.