Forney 72577 Wire Spring Extension (10-277), 3/4-Inch-by-6-1/2-Inch-by-.091-Inch Used in light industry such as screen doors, chaise lounges, toys Zinc plated steel wire extension spring Baked for a rust resistant finish and heat treated for performance and longevity Ideal for a wide variety of uses in homes, the shop, on the farm or ranch, small businesses