In the video, a person is seen using a wrench to tighten a bolt on a car. The person's hand is visible, and they are turning the wrench clockwise to tighten the bolt. The car part appears to be a brake caliper, and the bolt is located on the side of the brake caliper. The person's hand is steady, and they seem to be experienced in using the wrench. The lighting in the video is dim, and the background is not clearly visible.