Features: Multi-layer nano-coating, water-proof, oil-proof, and scratch-resistant. High-defination grinding optical glass lens, brings you clear imaging and restoring subjective viewing angle experience. Aviation aluminum frame, durable and not easy to corrosion, quick design for easy installation. UV-Filter: suitable for shooting in seaside, mountains, snowfields and open areas, etc. It can reduce the blue tone caused by ultra-violet rays. CPL-Filter: Eliminate unnecessary polarized light to make the picture clearer and more transparent, generally used for landscape photography. ND-Filter: More freely to control aperture and shutter, bring more space for photography, and effectively prevent overexposure. NDPL-Filter: Can remove glare, increase saturation, improve contrast, make the images more three-dimensional and transparent. NIGHT-Filter: Anti-light pollution filter, which can effectively reduce light pollution and bring out the true color of the images. STAR-Filter: The star filter is a place where the light is relatively bright, and there will be such a starry effect. It is usually used at night. Brushed(Streak) Filter: Allows you to easily capture glare and brushed effects, producing a brushed effect like a wide-screen movie lens. 15X Macro Lens: 15X high-definition micro shooting, allows you to discover a different new world. Specifications: Material: Optical Glass Diameter: Approx. 3.2cm/1.26 inch Height: Approx. 7mm/0.28inch Type: MRC-UV, CPL, ND8, ND16, ND32, ND64, ND1000, ND8PL, ND16PL, ND32PL, ND64PL, 15XMacro, Ant-light Damage, Star, Brushed Gold, Brushed Blue, Diving Pink, Diving Red, Diving Purple, 3-Color, ND86 CPL, ND16 32 CPL MRC-UV, 4Pcs NDPL, 6Pcs, 8pcs(optional) Applicable Model: Suitable for Osmo Action3 Camera Package Includes: 1x/3x/4x/6x/8x Camera Lens Filter(optional) note: Please allow 0-1cm error due to manual measurement.