About This In order to solve the problem of user installation mismatch, we provide 6 adapters and the interface of the extender itself, a total of 7 different sizes. The adapters and adapters can be combined to achieve more connection methods We provide the following 7 interface sizes for your use: Female G1/2. Female 20mm. Female 15/16"-27UNS (24mm). Female 55/64"-27UNS (22mm). Male 20mm. Male 15/16"-27UNS (24mm). Male 55/64"-27UNS (22mm). The rotation facuet aerator is made of traditional brass. The adapters are made of high-strength plastic material,reasonable in price. not only durable, but also flexible, easier to install. The gasket needs to be installed between the adaptors. The gasket is included in the packaging box. When the adapter is connected to the faucet, whether the water-leakage tape needs to be wrapped with it or not depends on the actual situation 360 degree rotation faucet aerator is with 2 water flow modes: Soft Bubble Stream(1.2 GPM) and Strong Spray(1.8 GPM). Dual water function allows different usage in daily life. The maximum adjustable working angle is about 160°,center to side is 80° Overview Brand : BOARNE Material : Brass Finish Type : Brass Thread Size : G1/2, 20mm Maximum Flow Rate : 1.8 Gallons Per Minute