1.Optical glass, precision grinding and polishing, high-definition imaging. 2.Double-sided multi-layer nano-coating process, restoring true colors. 3.Double-sided oil-repellent and waterproof, protecting the lens from external environmental impact. 4.Aviation aluminum frame material, logo laser engraved without fading. 5.The edge of the lens adopts anti-skid design, making it convenient for replacing and tightening the filter, improving ease of operation. Installation will not damage the your lens, allowing you to change,The filter at any time without missing wonderful moments. Specification:UV/CPL:Adjustable CPL, adjust the light by rotating the gear to choose the appropriate light intensity for shooting. Color: As Shown Material: Aluminum Alloy+Optical Glass Package Contents: 1 x Filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.