In this video, we see a close-up of a person's hand holding a metal tool, which they are using to work on a piece of machinery. The tool appears to be a wrench or similar type of tool, and the person is using it to turn a bolt or screw on the machinery. The machinery itself is not clearly visible, but it seems to be made of metal and has various holes and protrusions. The person's hand is 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.