brand filters, shipped 24 hours after order Advantage 1 Optical glass, precision grinding and polishing, high-definition imaging Advantage 2 Double-sided multi-layer nano-coating process, restore the true colour Advantage 3 Double-sided waterproof, oil-proof, for your lens protection Advantage 4 Aviation aluminium frame material, logo engraved by laser engraving will not fade, dark grey frame to prevent light leakage and ghosting Advantage 5 CPL is adjustable, you can adjust the light by rotating the gear and choose the right luminosity for shooting Advantage 6 Installation will not damage the original lens, change the filter at any time, do not let you miss the wonderful moment Advantage 7 Suitable for shooting in a variety of scenes Advantage 8 Quick and easy installation UV Filters The UV Mirror Is Effective In Reducing The Blue Tint Caused By Uv Rays , Increasing Light Transmissionfor For Clearer Picture Quality And Alsoacting As A Lens Protection Mirror CPL Filters CPL A Polarising Lens Eliminates Harmfulreflections And Improves The Clarity Andexpressiveness Of The Imagencreasing The Saturation Of Colours ,Such As Blue Sky , White Clouds , Etc .Eliminating Reflections From Glass Orwater ND Filters ND Reduces The Amount Of Light Intaketo Avoid Overexposure , And Low Shuttespeeds Can Be Achieved With A Lightreducing Lens When Shooting Video Cautions. 1. Only UV filters can transmit 98.5 per cent of light; CPL/ND-PL filters cannot be expressed in terms of light transmission, 2. only CPL filters can be adjusted, other filters cannot be adjusted, 3. the filters are only compatible with Insta360 GO2, Insta360 GO3, 4. CPL filters are not waterproof, ND/UV waterproof, please note before purchase. Note: 1.Does not include Drone, 2.Transition: 1cm=10mm=0.39inch, 3.Since the size and weight are manually measured, due to different measurement methods, there may be a certain error between the weight and size of the product, but this error does not affect the normal use of the product, please confirm that you know and accept the error before purchasing,, 4.Due to the difference between different monitors, the picture may not reflect the actual color of the item,please make sure you do not mind before ordering, Thank you!