Package: With the spout adapter, you can install the aerator with the adapter on the tap with M24 female thread, or the aerator without the adapter on the tap with M22 male thread. PREMIUM MATERIALS: The filter screen of the rotary aerator is made of ABS, the body and the nozzle adapter are made of brass, high quality and modern. The bubble aerator adopts high density filter, which can filter out most sediment, lime and impurities, prevent splashing and save 40-70% water. Dual function: The faucet aerator can adjust 2 different water flow modes, just turn the nozzle left or right to adjust the water flow from soft bubble mode to shower mode. EASY TO USE: Easy to install and clean, suitable for 99% of M24 female faucets, or use M22 male faucet aerators without adapters. Humanized design: easy to install and use, no need to replace the original faucet, no need to replace other environments.