High-quality materials: the spring hanging chair is made of steel, has good ductility, not easy to deform and has a long service life. Spring design: the spring coil wound in the middle can reduce the vibration caused by floating objects. Quantity and size: there are 2 hanging chair springs with a thickness of 7 mm and a load capacity of 500 kg, which is convenient to carry and use anytime and anywhere. Easy to use: There are hooks on both ends of the hammock spring. One end is connected to a sturdy object and the other end is connected to the hanging object. Scope of application: used for hanging chairs, hammocks, sandbags, swings, etc. and can also hang other similar items. It is a must have for hanging items. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!