BrassCraft SF0034X Universal Faucet Aerator Adaptor with 13/16-Inch 20 Male Thread x 55/64-Inch 27 Male Thread, Chrome Easy to use Highly durable Thread Size: 13/16" -20 male thread x 55/64" -27 male thread Height: 1/2" Chrome plated no-lead brass for a durable high quality appearance No-lead certified O-Ring is included