1.Made of high-definition optical glass, it has no impact on image quality, providing low refractive index to restore wonderful moments. 2.Double sided coating makes the surface easier to clean. 3.It is compact and lightweight, making travel burden-free. 4.The rubber ring inside the frame effectively isolates water droplets and moisture, protecting your for Ace Pro 2 lens from damage in underwater, rainy, and humid environments. 5.The aviation grade aluminum frame is laser engraved with a matte finish, which has strong corrosion resistance and is not easily affected by factors such as humidity and oxidation. Applicable models: For Insta360 Ace Pro 2 Note: This filter is only suitable for Ace pro2 cameras, please check the camera model before purchasing correctly, thank you! The printing/appearance may vary from batch to batch, but it will not affect the use; the actual product may have color difference due to different light or display. Colour:Photo Color Material:Aluminum alloy + optical glass Package Contents: 4 x Lens Filter(One each for ND8/16/32/64) 1 x wrench 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.