Give your porch swing a little extra bounce with the Swing-Mate Metal Comfort Springs. These springs are made with a high-strength chrome steel which is zinc-plated and clear-coated to provide protection against the elements. The springs are tightly coiled together for effective shock absorption enhancing the comfort of your porch swing with every movement. The specially designed Swing-Mate springs smooth out the swinging motion and allow a wide range of suspension. The increased comfort makes it a must for any porch swing. Each spring has a weight capacity of 600 pounds.