For DJI Flip STARTRC 4 in 1 ND16 ND64 ND128 CPL Lens Filter 1. A set of filters for DJI Flip, with multi-layer coating, waterproof, scratch-proof, dust-proof and oil-proof, protecting your Flip lens from all-round damage. Meet the needs of ND filter and CPL polarizer, and choose from a variety of filter effects when shooting, including ND1664128, and CPL filter, four types of lenses. 2. Each filter is made of high-definition optical glass, which has no effect on image quality. After multiple grinding and polishing, it forms a low refractive index to ensure the restoration of the true color of the image to achieve color-accurate photo shooting. 3. The aviation-grade aluminum frame is laser-engraved with a matte black finish to prevent light leakage or ghosting, ensuring that each filter has been rigorously tested and will not add extra burden to your gimbal or interfere with the normal flight of the drone. Each filter weighs only 0.4 grams. 4. The snap-on design and the handles on both sides only require alignment with the lens for safer and quick installation. It can be tightly fixed on the drone during flight with zero possibility of loosening. 5. Equipped with a special 4-pack filter box, which is convenient for storage and also protects the filters, making it easy to carry.