Thread: FM22*1 or M24*1 or dual thread Material: Brass Surface treatment: Chrome plated 2 function with two stream: soft bubble without splash; strong shower spray easy for scouring 360 degree swivel 80° big angle ball joint easy for convenient washing Can be fitted to Kitchen, Sink Faucets, Bathroom Taps and Lavatory Faucets Save energy: Water saving 30%~70% (compared with standard bubbler) Simplified design, Easy to install, Polished chrome finish http://www.waternymph.cn/product/29-Aerator-Sepecificaion-25.html