design for smooth flight without affecting . The frame is made of aviation aluminum material and CNC processed for high-precision adaptation. It is , sturdy, corrosion-resistant, durable, and has a longer service life, without affecting drone calibration or balance. It does not fade or rust. High quality ultra clear image quality, clearer images, increased color saturation, restored contrast, and more detailed photography image quality add special effects to your "eyes", making your aerial photography creation more effortless and easy to cinematic images. High definition professional optical glass with high durability and scratch resistance, multi-layer nano coating process, can clear imaging and meet the high pixel imaging standards during the process. Nanocrystal coating: Adopting a double-sided multi-layer nano coating process, the lens is endowed with high-quality performance, preventing scratches on the surface of the filter, improving the transparency of the filter itself, minimizing light reflection and refraction, and also being waterproof and anti fouling. High strength hardness adds protection to the lens: The lens is tempered, with high hardness and hard texture, which is not easy to scratch. Multiple protections are needed to more durable. Set: B +ND32+ND16+ND64 Model :For Mini 4 Pro Filter Material: plastic colour: black Package Contents: 1 x filter 1 x ND32 filter 1 x ND16 filter 1 x ND64 filter 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.