Color: Silver Material: Brass and ABS Size: M24 Nozzle Adapter Thread Diameter: 23.7 mm Inner diameter of the aerator: 22 mm Package: 1 x Swivel faucet aerator 1 x Nozzle adapters 2 x Gaskets This aerator is not suitable for faucets with low pressure water filter, it will reduce water flow and prevent water from splashing onto you or out of the sink, helping you save water. The Water Filter faucet rotary can be easily rotated 360 degrees and can be easily switched between two water outlet modes at any time, easily saving up to 40%-70% water. You can use it for your kitchen or bathroom faucet and replace the old faucet water filter. Does it need to install an adapter 1. If your faucet thread is internally threaded (threaded inside) and the internal thread is about 23.5-24mm in diameter, install the aerator with the adapter (M24) on your faucet. 2. If your faucet thread is externally threaded (outside threaded) and the thread diameter is about 21.5-22mm, remove the adapter and install the aerator (M22) directly onto your faucet. Note: The data is manual measurement, please allow 1-145cm error, due to differences between light and screen, there will be a certain color difference, the specific received in kind shall prevail.