Heavy Duty Hammock Chair Spring, 400 L Weight Capacity, Used with Porch Swings, Hammocks, Hanging Chairs HIGHER WEIGHT CAPACITY THAN ITS COMPETITORS. The West Star spring is universal and can be used with all hammocks, chairs, and swings. Attaches between the hammock/swing/chair and swing chain to provide a softer and more comfortable feel for all customers. NO RUST FEATURE. The West Star spring is 8.5" long and 2" wide. Built to provide our customers with the best support. Treat yourself to the most peaceful rest. You will not be disappointed with the quality of our product as it built with very sturdy steel. The weigh capacity is greater than other springs. 400lb weight capacity and is waterproof.