The video shows a close-up of a person's hand holding a small green ball. The hand is positioned over a metal object, which appears to be a part of a machine. The person's thumb is resting on the metal object, and the green ball is being moved back and forth over the metal surface. The metal object has a circular shape with a flat top and bottom, and it is silver in color. The person's hand is visible throughout the video, and the green ball is the only object being manipulated.