Wide Use: Our spring hook fits almost all types of hanging chairs, hammocks, egg chairs, wicker boxes, full sets of sandbags, yoga equipment, flower baskets, etc. And all other favorite sports. High Load Capacity: Made of high quality spring steel, the heavy-duty steel construction ensures a maximum load of 500 kg per spring. High hardness, non-toxic and pollution-free environment. You can use it with confidence. Durable: The hammock spring is galvanized hardened spring steel, which is anti-corrosion and anti-rust, improves weather resistance and spring life. Cushioning Feature: The spring absorbs the shock of your hammock's movement to help relieve stress from impacts, provide a softer, more comfortable feel, and reduce noise. increase the service life of the hammock. Simply use: Length: 108mm, width: 40mm, diameter: 7mm, with hooks at both ends, easily attach what you need to hang without using complicated tools or operations.