Feature:1. PREMIUM MATERIAL: Premium optical glass, precision grinding and polishing, high definition imaging; double sided multi layer nano coating process, restore the true color. Aviation aluminum frame material.2. USAGE: CPL filter to remove dazzling, polarizer can eliminate harmful reflections, improve image clarity, increase color saturation, such as blue sky, white clouds, etc.; eliminate reflections on glass or water.3. ADJUSTABLE: The CPL circular polarizing filter is adjustable, the light can be adjusted by rotating the gear to choose the right luminosity for shooting.4. OIL RESISTANCE AND WATERPROOF: CPL circular polarizing filters are oil resistance and waterproof on both sides to protect the lenses from the external environment.5. SIMPLE INSTALLATION: The mirror edges are designed with non slip, easy to change and tighten the filters to improve the ease of operation. Installation will not damage the original lens, change filters at any timeSpecification:Item Type: CPL Lens FiltersMaterial: Aluminum Alloy, Optical Glass.Package List:1 x CPL Filter1 x Storage Box1 x Cleaning Cloth