In the video, a person is seen using a tool to tighten a bolt on a piece of machinery. The person's hands are visible, and they are wearing a watch on their left wrist. The tool appears to be a wrench or a similar type of hand tool. The machinery has a circular component with a hole in the center, and there are wires connected to it. The person's hands move with precision as they turn the tool to tighten the bolt. The background is a concrete floor, and there are other tools scattered around.