The transparent housing faucet water filter allows you to directly see the water purification process and the service status of the filter cartridge. You can decide whether to replace it by observing the color of the filter cartridge. The faucets fit perfectly with all common standard faucet types. The filter cartridge is washable to maintain the filtering effect and extend the service life. During use, the water becomes significantly smaller or the filter cartridge becomes dirty, which indicates that the filter cartridge needs to be cleaned. This sink faucet filter is easy to install, suitable for most ordinary shaped faucets.