A ball with a ring

The kit should include a tripod, metal rings with a coupling and a ball with a chain. 

The upper part of the rod of the tripod should be bent, and a chain with a ball should be fixed on it. 

Ring coupling It should be placed on the tripod rod and can be installed together with the ring at the required level. Above the ring on the tripod rod, the ball should be suspended on a chain If the ball is heated to a temperature higher than the temperature of the ring by 80 °C,then the ball should get stuck in the ring and stay on it until the temperature equalizes.