Similar to resistance bands the chains you are lifting progressively become heavier, providing maximum muscular stimulation throughout the entire range of motion.

For example, you may be able to do a quarter squat with 600 lbs, but you may be able to only full squat 400 pounds. With chains, you can make it so the weight at the top is 600lbs, and as you squat down, more chains will pile onto the floor, making the load lighter.

They also look and sound totally badass.

A “set” consists of two large chains, two small connecting chains and two quick links.

You get added versatility with two extra-long, 3/16 x 72″ attaching chains. The extra length allows you to adjust up to a full standing length of 8 feet or adjust as short as you prefer. The attaching chain goes through any link in the larger chain and connects to form a complete loop that slips over the ends of the bar.

Or, you can just buy additional strips of just chain to your existing set.