Chain

A chain is a serial assembly of connected pieces, called links, typically made of metal, with an overall character similar to that of a rope in that it is flexible and curved in compression but linear, rigid, and load-bearing in tension.

Chains can be classified by their design, which can be dictated by their use: Two distinct chains can be connected using a quick link, carabiner, shackle, or clevis.

These methods are usually specific to the type of chain, and must be of the correct size.

The metal link chain has been in use since at least 225 BC.

[3] The prevalent modern symbolism is oppression,[citation needed] due to the use for a mechanical restriction of the liberty of a human or animal.