General description Heavy steel construction with galvanized and clear coating for extra weather resistance. This 2 Pack Hanging Hooks features a very strong design that can be used for a long time. The spring helps to relieve the stress of impact, providing a more comfortable and softer feel, while extending the life of your hammock and its surface. Technical specifications Rated spring capacity: over 700 lbs Wire diameter: approx. 7 mm Length: approx. 108 mm Compatibility and accessories Compatible with almost all punching bags Hanging chairs Cocoons Egg chairs Wicker chairs Contents: 2 x carabiners