A. The diatomite is used as the material. B. Generally, this filter is suitable for installation on the faucet for filtration. C. It has relatively good filtration performance. The filtration system consists of seven kinds of filter materials, including deep - sea diatom, calcium sulfite, activated carbon, mineralized balls, tourmaline, PP cotton and filter screen. Thus, it can remove many harmful pollutants such as chlorine, viruses, heavy metals, rust, etc. D. The washable filter is more economical and can extend the service life of the filter element. E. Color: White F. Material: Diatom G. Size: 43×43×85 mm H. Package contents: 4 water purifier filter elements I. Only the above package contents are included, and no other products are included. J. Note: Light and different displays may cause the color of the item to vary slightly from the actual product. A measurement error of plus or minus 1 - 3 cm is allowed.