You are going to have the look that everyone will be envious of whenever you have a necklace like this one. The chain has two sides to it to make sure that your look is one that is unique. On one side of the necklace is elongated interlocking links with a fine gauge metal. The other side of the chain is a fine twisted metal interlocking chain necklace. The side with the fine chain is a double chain. One of the fine chains attaches to the center locking mechanism while the other passes through it. The one that passes through has an engraved dog tag charm attached to the end of it. The locking mechanism is the kind of carabiner you would expect to find in rappelling gear. It can be twisted open and shut for you to lock on the chains or to remove them when you are taking the necklace on and off.