MULTIFUNCTIONAL: Our spring hooks are suitable for almost all types of hanging chairs, hammocks, egg chairs, wicker boxes, complete sandbags, yoga equipment, flower baskets and more. HIGH LOAD CAPACITY: Heavy-duty steel construction made of high-quality spring steel guarantees a maximum load of 500kg per spring. High hardness, non-toxic and environmental protection. You can use it with confidence. Durable: The hammock springs are galvanized on hardened spring steel to prevent corrosion and rust, improving the weather resistance and service life of the porch swing springs. Cushioning: The spring absorbs the shock generated by the movement of the hammock, reducing impact pressure, providing a more comfortable and softer feeling, and reducing noise. Extend the life of your hammock. Easy to use: Length: 108mm Width: 40mm Diameter: 7mm With hooks on both ends, you can hang what you need to hang without tools or complicated operations.