The ND filter set for the DJI Mini 3 Pro was well packaged and delivered quickly. All filters are delivered directly in a practical plastic box. The package includes 6 ND filters and 2 sets of propellers. With ND filters, you can record much nicer videos, especially on cloudless days. These are like a kind of sunglasses for the camera, the higher the value, the darker the image. When filming at 4K 30fps, the shutter speed should be 1/60 to make the footage look cinematic. However, this is impossible on sunny days, even if the ISO is 100. So it needs an ND filter to darken the image. If you want to shoot at 60fps, you should set the shutter speed to 1/120. This requires an ND filter with a small value. So far, I've only used the ND4 to ND16 filter. The other filters are only suitable for special applications or for long exposures. Although the latter is difficult to achieve with a drone.
I am also satisfied with the workmanship of the filters. They are made of aluminum and glass and are very lightweight. Nevertheless, you exceed the 250g limit. The filters therefore do not impair the functionality of the gimbal system. The protective cover still fits the gimbal system. The filters can also be plugged in and removed without any problems. They also sit very firmly on the camera. In the end, you get inexpensive ND filters and 2 sets of propellers, which help you to expose the video with the ideal exposure time. Unfortunately, I haven't been able to test the replacement propellers in theory yet. However, I am quite satisfied with the quality of workmanship. These also look sturdy and hardly differ from the original propellers in terms of appearance and size.