Features 1. 100% brand new and high quality. 2. 7 in 1 big pack: 52mm adapter ring + 52mm UV filter + CPL filter + ND2 + red + yellow + magenta in one pack. 3. Applies to Xiaomi Xiaoyi Yi II sport action camera. 4. The filter could limit the reflection from non-metal surface such as water and glass windows. Using the filters, the colors shall become brighter and clearer and the contrast shall be strengthened. 5. Filter Diameter: 52mm. 6. Material: glass, plastic.