In this video, a person is seen working on a mechanical device. The device appears to be made of metal and has a circular component in the center. The person is using a small brush to apply a blue substance to the circular component. The substance is being applied carefully and evenly, covering the entire surface of the component. The person's hands are steady, and they seem to be experienced in handling the device. The background is a plain white surface, which provides a clear view of the device and the person's actions. The video does not contain any audio, so the focus is solely on the visual elements.