Designed with lightweight and harmful chemicals purification function, you can find that this water filter replacement cartridge can remove the most rust, silt, sand, bacteria and other undissolved particles from dirty water with 99 percent efficiency, which can also absorb the odor and color of water and adjust the taste of water in daily life. What it can offer you is that this water filter replacement cartridge can provide you a better quality water and a healthy lifestyle, and it can protect your rear filters, water appliances and pipes with purer state as for pre-filtering filter of the filtration system. Made of PP cotton, it is safe and lightweight. The length of this product is 25.4cm. The outer diameter is 6.2cm, and the inner diameter is 2.8cm. It is suitable for home,office, shop, store, restaurant, etc. Item Name: Water Filters Material:PP Cotton Service Life: 4 Months to 6 Months Operating Temperature: 4 Degree Celsius to 50 Degree Celsius Filter Rating: 5 Micrometers Removal Rate: 99% Size Details: Length: 25.4cm/10", Outer Diameter: 11cm/4.33", Inner Diameter: 2.8cm/1.1" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 4 X Water Filters(Random Appearance Lines)