High-quality materials: The splash-proof filter is made of safe and durable materials, strong and durable, it is non-toxic and safe to use, and both hot and cold water are acceptable.It contains Maifan stone filtration material and is normally used for a period of three months. (Depending on the water quality and frequency of use, the period of use may need to be extended or shortened depending on the actual situation.) Retractable design: The faucet water filter is retractable and can be used 360, making the faucet more practical and flexible. Splash-proof design: It can reduce the water impulse and prevent water from splashing. The water quality is soft and rich without splashing water. Easy installation: Manual installation without tools,inner diameter of hole 2.2cm,just make sure your faucet filter extender fits the size of the faucet. Adapt to water saving: Adjust from water flow to spray, which can save more than 50% of water, energy saving and environmental protection.(Not suitable for taps with excessive water pressure.) Tip: As there is only a small amount of Maifan stone in our products, it can only absorb basic impurities such as trace elements in the water and does not provide a fine filtration effect.