Increased strength, heavy-duty and more durable stainless steel chain links and bolder pro style swivel with zinc galvanized finish offers maximum strength, super efficiency and tangle-free heavy bag training. Bolder pro style swivel allows heavy bag to naturally move and spin without bunching or knotting. Includes four professional strength quick links for fast, convenient and secure attachment. Ideal for gyms and industrial use. Fits heavy bags with four top D-rings. Ideal for heavy bags up to 150 lbs. 24” Length.