Heavy Weightlifting Chains TWO 5' pieces of chain are included per set in Standard diameters of 1/2", 5/8" or 3/4" TWO lengths of smaller diameter chain to connect heavy chain to barbell TWO quick links are included per set to secure the smaller chain Our heavy weightlifting chains are great for progressive chain lifting work-outs when attached to a barbell. We also offer chain that is covered with a heavy duty nylon fabric, allowing you to also wear the chain for added resistance. This is great for so many different work-outs, from ring-dips, pull-ups, weighted sit-ups, squats, lunges and rope climbing.