Heavy Duty Spring, Stainless Steel Extension Spring Suspension Hook, Hammock Chair Accessory For Garden Swing Hammock Hanging Chair Punch Bag Cocoon Material: made of high-quality stainless steel. Strong steel structure, good performance, corrosion resistance, durability and safety. Safe and firm: It is firmly connected to the rocking chair, so you can rotate without kinking or turning. Quietness, pressure and vibration. Collision mitigation: The spring helps to relieve the pressure caused by impact, provide a more comfortable and soft touch, and will extend the service life of the hammock, as well as your installation surface. The suspension spring ring is made of high-quality steel structure. They can bear a weight of 250 kilograms. Rely on these high-quality swing hangers to safely and reliably support children and adults. The hammock spring absorbs the vibration generated by the hammock movement and helps to reduce the impact or vibration, thus providing a comfortable use experience. Our hammock springs can accommodate almost all punching bags, hanging chairs, coconut, egg chairs, rattan wicker baskets, chandeliers, sling trainers, sandbags, and air gyms. Material: stainless steel. Color: silver. Length: 108mm/4.25 "(about) Package includes: 2 hanging hooks. Warm tips: 1. The picture may have slight color difference 2. Manual measurement, please allow slight error, and carefully check the size before purchasing.