In the video, a person is seen using a tool to tighten bolts on a piece of machinery. The person's hand is visible as they work on the bolts, which are located on a metal surface. The tool used appears to be a wrench or a similar type of hand tool. The bolts are hexagonal in shape and are being tightened in a clockwise direction. The person's movements are deliberate and precise, indicating that they are experienced in using the tool. The background is blurred, but it seems to be an industrial or workshop setting.