Chain

A broad metal chain made of torus-shaped links. A metal chain with diamond fashioned link pins. Roller chains, a chain is a sequence of connected links, usually made of metal.
Chains are typically made in one of two styles, according to their intended use: Those designed for lifting, such as when used with a hoist, or for securing, such as with a bicycle lock, have links that are torus shaped, which makes the chain flexible in two dimensions. Those designed for transferring power in machines have links designed to mesh with the teeth of the gears of the machine, and are flexible in only one dimension. They are known as Roller chains. Chains can also be ornamental as jeweler.