Features 1.Special spring steel, galvanized on the surface, can be used at will, durable and not easy to rust. 2.Its load bearing is 500kg/1102.3lb, which can withstand general objects, and is safe and stable. 3.The spring shape helps to reduce impact pressure, provide a more comfortable and soft feeling, and extend the life of the hammock. 4.Heavy‑duty spring can absorb shock, reduce noise, vibration and pressure, and give you a better experience. 5.With a wide range of usage and is suitable for all punch bags, hanging chairs, silkworm cocoons, egg chairs, wicker baskets, boxing sandbags, etc. Specification Item Type: Hammock Spring Material: Galvanized Iron Product Color: As Pictures Shown Product Thickness: Approx. 7mm / 0.3in Product Weight: Approx. 384g / 13.5oz Tensile Force: 500kg / 1102.3lb Package List 2 x Springs