Do it Best Universal Low Lead Aerator

Chrome-plated low lead aerator has dual threads. 15/16″ – 27 female x 55/64″ – 27 male. 1.5 GPM (gallon per minute). No. 400731: Thread Size: 15/16″-27 male x 55/64″-27 female, Flow Rate: 1.5 GPM, Finish: Chrome, Material: Brass, Connection: 15/16″-27 female x 55/64″ – 27 male, Pkg Qty: 6, Package Type: Card