Whedon SA1C Faucet Aerator, 15/16-27 x 55/64-27, Male x Female Thread, Brass, 2.2 gpm

Standard faucet attachments provide excellent stream straightness. Rated at 2.2 gpm maximum flow at 60 psi, complies with federal codes. Dual thread brass shell with 15/16 male and 55/64 female threads, fits most faucets.