The video shows a person's hands using a tool to tighten a bolt on a piece of machinery. The person's hands are visible in the frame, and they are using a tool to turn the bolt clockwise. The machinery appears to be made of metal and has a black finish. The bolt being tightened is silver and has a hexagonal head. The person's hands are steady, and they seem to be experienced in using the tool. The background is blurred, but it appears to be a workshop or industrial setting.