In the video, a person is seen using a tool to adjust the tension of a bolt on a piece of machinery. The person's hand is visible, and they are using a wrench to turn the bolt. The machinery appears to be made of metal and has several bolts and screws. 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 garage setting. The lighting is bright, and the colors in the video are muted.