This heavy-duty spring made of iron is suitable for hanging hammock chairs and other hanging accessories like punching bags, hanging plants, etc. It securely clips onto your swinging chair, let you and twist without tangling or have to untwist. Low noise, stress and vibration. Features -Material: Stainless Steel- Spring for mounting hammock chairs and other hanging accessories like punching bags, hanging plants, etc.- Securely clip onto your swinging chair, let you rotate and twists without tangling or having to untwist.- Sturdy steel construction, industrial quality long spring coil, perfect for all your heavy bag needs.- Low noise, stress and vibration. An essential gadget for outdoor supply.- It is manufactured with professional technology to ensure the of the product and can work for a long time. Packing list: 1 x Spring2 x Spring Hooks