High-hardness scratch- glass material: The lens is made of high-aluminum glass with higher hardness, which is not afraid of being scratched by sand and dust in the airflow during flight; The high-quality white material base has better light transmittance, ensuring that the picture is color-free during high-speed dive<br> metal frame: The frame is made of CNC metal material, which is strong and light, not easy to deform; it can effectively resist impact and prevent the filter from loosening and affecting or falling and losing<br> ND filter: Reduce the amount of light entering, prevent overexposure of the picture, and keep the dynamic blur natural during high-speed flight<br> UV filter: Transparent and colorless, physically protect the lens from being scratched by branches/gravel, and present the picture quality without loss<br> Multiple specifications: The set includes UV/ND8/ND16/ND32 lenses of specifications, which can meet most daily use scenarios<br> Name:Filter Kit<br> Applicable:for O4 Air Unit Pro<br> Filter model: UV/ND8/ND16/ND32 Filter<br> The product appearance and printed words depending on the batch, but this does not affect use<br> Colour:As Shown<br> Material:CNC aluminum parts + high aluminum white glass<br> Package Contents:<br> 1 x Filter Kit<br> Only the above package content, other products are not included.<br> 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.