The chain slings will feature a master link, also called an end link. Most of the time, these are oval shaped, but there are some manufacturers that offer pear shaped master links as well. Attached to the end link are the chains, which can come in a variety of configurations. At the end of the chain or chains on the sling is a type of hook. This type of hook will vary based on the application. There are sling hooks, grab hooks, and foundry hooks. Each of these different types of hooks will work for different applications.