Wide Usage: Our spring hook fits almost all kinds of hanging chairs, hammocks, egg chairs, wicker boxes, complete set of sandbags, yoga equipment, flower baskets, etc. And any other favorite sports. High Load Capacity: Made of high quality spring steel, sturdy steel construction ensures a maximum load of 500kg per spring. high hardness, non-toxic and pollution-free environment. Can be used with confidence. Durable: The hammock spring is electroplated on the hardened spring steel, which is anti-corrosion and rust-proof, improve the weather resistance and service life of the porch swing spring. Buffer Function: The spring absorbs the shock from the movement of your hammock to help relieve stress from impacts, provide a more comfortable and smoother feel, and reduce noise. increase the life of the hammock. Simply use: Length: 108mm, width: 40mm, diameter: 7mm, with hooks on both ends, easily connect what you need to hang without using tools or complicated operations.