The video shows a close-up of a piece of wood with a hole in it. A person is seen holding a piece of metal with a threaded hole in the center. The person then places the metal piece on top of the hole in the wood and uses a pencil to mark around the edges of the metal piece. The person then uses a tool to cut along the marked lines, creating a square metal piece with four holes around the edges. The person then places the metal piece on top of the hole in the wood and uses a tool to secure it in place.