Packing: With the nozzle adapter, you can apply the bubbler with adapter to the faucet with M24 internal thread, or apply the bubbler without adapter to the faucet with M22 external thread. High quality materials: the filter screen of the rotary aerator is made of ABS, and the body and nozzle adapter are made of brass, high quality and modern. The bubble aerator has a high-density filter that can filter out most sediment, lime and impurities, prevent splashing and save 40-70% water. Dual function : The faucet aerator can be adjusted to 2 different water flow modes. Simply twist the nozzle part left or right to adjust the water flow from soft foam mode to shower mode. Easy to use: easy to install and clean, suitable for 99% type valve body M24 internal thread faucet, or use the bubbler without adapter for M22 external thread faucet. Humanized design: easy to use. install and use, no need to replace the original faucet, no need to replace other environments.