1. Use organic diatomaceous earth as the main filter material. 2. Generally, the filter elements can be suitable for faucet installation filter. 3. Better filtration performance. The filtration system has 7 kinds of filtration materials including deep-sea diatom ceramics, calcium sulfite, activated carbon, mineralized balls, tourmaline, PP cotton and filter nets. Therefore, it can remove many harmful pollutants, such as chlorine, bacteria, viruses, heavy metals, rust, etc. 4. The cleanable filter elements is more economical and can extend the service life of the filter element. Colour: white Material: Diatom mud Size: 43 x 43 x 85mm Package Contents: 4 x Water purifier filter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.