This swivel chain for heavy bags is made of solid steel with a zince coating for durability and can hold bags up to 150lbs. Perfect for the home gym, commercial gym or health club, this hanger can be used for boxing, kick boxing or MMA bags. Each chain measures 12" long including the snap hooks and the whole assembly is 19.5" long including the top snap hook. The swivel means the chains will not twist and it will lessen the stress on the ceiling. By Trademark Innovations.