1、APPLICABLE MODEL: This filter kit is designed for Action 3 Action 4 Action 5 Pro cameras. The filters are installed without damaging the original lens, so you can change filters at any time and never miss a moment. 2、MATERIALS AND PROCESS: Made of optical glass, after accurate grinding and polishing, it can realize high definition imaging. It adopts multi layer nano coating process, which makes it has good water resistant, oil resistant, anti smudging, anti scratch performance, and at the same time, the color of the filter under the sunlight and light is not the same. 3、UV FILTER: It can effectively attenuate the blue tint caused by UV light, blue gray tint, increase the transmittance, make the picture quality clearer, and also is a lens protector. 4、CPL FILTER: It can eliminate harmful reflections, improve the clarity of the image, increase color saturation, such as sky, white clouds, etc., and eliminate reflections from glass or water. 5、ND FILTER: Reduces the amount of incoming light to avoid overexposure. It can also counteract scattered light and increase the color saturation of the picture, making it more transparent and vivid. When shooting video, you can reduce the shutter speed through the ND filter. Item Type: Action Camera Filter Set Material: Aluminum Alloy, Optical Glass Applicable Model: For Action 3 Action 4 Action 5 Pro 1 x UV Filter 1 x CPL Filter 1 x ND8 Filter 1 x ND16 Filter 1 x ND32 Filter 1 x ND64 Filter 1 x Storage Box 1 x Cleaning Cloth