Feature 1 Advanced knurling technology, prevent hand slip, convenient disassembly, more practical. 2 High quality aluminum frame design, the front of frame is threaded for mounting the lens cap and other accessories at any time. 3 Prevent lens contact with dust and oil scratches, UV lens not only to protect the lens, but also can not affect the quality of the photo. 4 Instead of eliminating infrared rays, infrared filters block visible light, allowing only infrared rays to pass through, creating images that look like black and white but have unique colors. 5 UV lens is suitable for the seaside, mountain, snow and open areas and other environments, can reduce the blue caused by ultraviolet light.Item Type: Camera Lens FilterRing Color: BlackMaterial: Aluminum Alloy + Optical GlassFilter Type: Infrared UVLens Compression Spring: Screw-in Package List1 x Camera Lens Filter