Features: Filter precision can reach 0.2-0.5 micrometre; under 3kg water pressure, the output is 180kg/h. Lightweight with a high pore ratio and density less than 0.8g/cm; the pore ratio is 1.3-1.5 times that of a standard ceramic filter. Under the same conditions, its permeability is 1.5-3 times that of conventional ceramic filter elements. Pores are evenly distributed with high filtration precision down to 0.1 micrometre. Self-cleaning performance is effective with no internal contamination. Easy to regenerate by rinsing with a brush, light sanding with sandpaper, or flushing with clean water; allows for repeated use. Removes harmful contaminants such as E. coli, fecal coliform, Salmonella, Streptococcus, and cysts (Cryptosporidium, Giardia). Reduces chlorine, odor, sediment, and asbestos. Washable and reusable up to 30 times. Flow rate can be restored by gently brushing the outer surface with a stiff toothbrush, plastic brush, or soft scouring pad under running water. As the outer layer and trapped particles are removed, a fresh filtering layer is exposed. Main ingredients: Kieselguhr and inorganic agents. Note: Do not use soap, detergents, or steel wool. Material: Ceramic + Plastic Color: As shown Package Contents: 4 x Ceramic filter Note: Only the items listed above are included. Other products are not part of the package. Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowance: +/- 1-3 cm.