This Campbell AW0320427 twist link machine chain is zinc plated, packaged on a reel, and trade size #4. It is made of low-carbon steel, which has good wear resistance and lower carbon content than medium- and high-carbon steel. The chain measures 0.12 in in diameter and 100 ft in length per reel, and it has a working load limit (WLL) of 205 lb. Its zinc-plated finish helps prevent the onset of rust. It is suitable for enclosing farm or commercial security gates, suspending or hanging items, and other general purpose applications. This chain is not recommended for use in overhead lifting or hoisting applications.