1. Use biological diatomaceous earth because the main clear out material. 2. Generally, the clear out elements could be right for faucet set up filter. 3. Better filtration performance. The filtration formulation has 7 varieties of filtration materials adding deep-sea diatom ceramics, calcium sulfite, activated carbon, mineralized balls, tourmaline, PP cotton and filter nets. Therefore, it'll eradicate many risky pollutants, such as chlorine, bacteria, viruses, heavy metals, rust, etc. 4. The cleanable clear out points is more economical and can enlarge the provider lifetime of the filter out element. Colour: white Material: Diatom dust Size: forty three x forty three x 85mm Package Contents: 4 x Water air purifier filter out Only the above package content, different merchandise will not be included. Note: Light shooting and diversified reveals could cause the colour of the object within the photo a chunk varied from the real thing. The size allowed error is +/- 1-3cm.