Item No.RO- 0283 RO Series / 起泡器連接牙 Internal Faucet Adapter 1. Brass material of Faucet Adapter thread by 55/64"-27 to 15/16"- 27 UNS 2. Brass material of Faucet Adapter thread by 55/64"-27 to 13/16"-27 UNS