Heat-treated carbon steel. For use in load binding, towing, and logging can also be used with DOT regulations. Zinc electroplated with yellow chromate conversion coating finish. Designed for use in load binding, towing, logging and other applications requiring high strength. WARNING: DO NOT EXCEED the working load limits for chain or components. DO NOT USE for overhead lifting or hoisting. DO NOT USE if the chain or components are visibily distorted or worn.