Used DJI ND Filter Kit, Includes ND4, ND8, ND16 and ND32 Filters for Osmo Action, Part 10

Four types of filters covered with an anti-fingerprint coating fully meet your demands shooting in various lighting scenarios. These filters reduce the amount of light that enters a camera's lens, making it easier to get the perfect shot in bright condidtions. The knurled knob of the filter allows you to attach it seamlessly to the lens.