1. Features: It is of a certain quality. 2. Powerful filtering function: It can filter particles that are 1 to 5 micrometers smaller than haze particles, such as scale and various impurities. 3. Durability: The PP filter cotton can effectively purify the water source for about 2 - 3 months (the specific duration may vary according to the actual water quality), and it is relatively durable. 4. Time - and effort - saving: There is no need to upgrade to a relatively expensive whole - house filtration system. It can restore a certain degree of vitality, radiance and balance to hair, skin and nails, making them relatively smooth, strong and tough. 5. ABS material: The filter frame is made of ABS material, which is strong enough and can ensure a certain degree of corrosion resistance. 6. Easy installation: No tools are required. Its standard size allows it to be easily screwed into a standard G1/2 - inch hose, facilitating installation and replacement. 7. Material: APP 8. Size: Approximately 8 cm in length 9. Packaging contents: 5 shower filters 10. Notes: Due to manual measurement, an error of 2 - 3 cm is possible. In addition, the color display on different computers may vary, and the actual color of the item may be slightly different from the following pictures. Thank you for your understanding. (1 inch = 2.54 cm)