A series of connected links or rings that are usually made of metal and can be connected or fitted into one another is what we call chains. Depending on its application each piece of the chain can have more than one link. Few uses of chains can be for supporting objects, fastening, or binding. The two most common styles of making chains are roller chains and those that are torus-shaped. Generally, on the application of the chain, the style of the chain depends. In many applications, the dragging chain is very common.
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