This heavy-duty spring made of stable steel and 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 twisting without tangling or have to untwist. Low noise, stress and vibration. Features -Color:Multi -Material:Steel, Alloy -Size: 15.00X3.30X3.30cm,9.00X3.00X1.00cm,7.50X3.00X1.00cm;/5.89X1.30X1.30in,3.54X1.18X0.39in,2.95X1.18X0.39in; -The adapter ring supports 360° rotation and , so it can be used more flexibly and widely, and can be suspended from any other heavy objects hanging from an elevated frame. -The swinging spring kit is stable and good, and the spring can jump with the amplitude, or rotate comfortably, so that the human body can relax. -You can suspend hammocks and chairs very safely and easily, while the rings are quick and easy for secure connections. -Suitable for porch , lamp, hammock chair, awning, sandbag, chair, aerial , outdoor , etc. -Made of premium and sturdy alloy and stable steel material, which is not easy to rust and corrode. Package list: 1 x Spring 1 x Adapter Ring 4 x Hanging Rings