8 LEVEL HIGH EFFICIENCY FINE FILTRATION : The non-woven filter layer removes sediment and coarse particles, FOF material effectively prevents scale deposition by filtering tiny floating particles, activated carbon absorbs organic matter, dyes, odors and other impurities in the water, and the calcium sulphite bottle absorbs residual chlorine and other harmful substances. Convenient Dual Water Mode : With a simple switch, the water flow can be controlled to quickly switch between tap water (not filtered) and filtered water to meet different water needs. The faucet design saves space and makes cleaning and cooking easier. (The diameter of the water flow hole is 0.7mm) High Quality Filter Element The main body of the faucet filter is made of food grade ABS material. It is a safe, reliable and durable activated carbon fiber filter element with long-lasting filtration performance. adsorption ability and long service life. The physical pressure effect of water on the nozzle ensures smooth