In the video, a person is seen holding a tool in their hand. The tool is made of metal and has a chain attached to it. The person is using the tool to adjust the chain on a bicycle. The bicycle is not visible in the frame, but the chain and gears can be seen in the background. The person's hand is steady as they manipulate the tool, indicating that they are experienced with this type of repair. The tool appears to be a chain tool, which is commonly used to adjust and repair bicycle chains. The video does not provide any additional context or information about the location or purpose of the repair.