This alluring horse head carabiner keychain includes your laser engraved message in the price of the item. You can also engrave the other side with the same, or additional, information. The horse head carabiner is made of anodized aluminum, a process in which the colored coating becomes part of the metal — as opposed to being a separate layer, as with paint. The surface of the aluminum itself becomes strengthened to a degree unmatched by other processes.