In the video, a person is seen using a wrench to tighten a bolt on a piece of machinery. The person's hands are visible, and they are wearing a ring on their left hand. The machinery appears to be made of metal and has various wires and tubes attached to it. The person is using the wrench with their right hand and appears to be applying force to tighten the bolt. The background is not clearly visible, but it seems to be an indoor setting with artificial lighting.