This heavy-duty spring is made of stable iron and stainless steel, it 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.Features-Color:Black-Material:Iron, stainless steel-Size(spring):27.50X3.50X3.50cm/10.81X1.38X1.38in-Size(Mountaineering buckle):8.00X4.00X0.60cm/3.14X1.57X0.24in-Size(Rotating ring):9.00X3.50X0.60cm/3.54X1.38X0.24in-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, swing 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 swing, lamp, hammock chair, awning, sandbag, swing chair, outdoor swing, etc.-Made ofiron and stainless steelmaterial, which is durable and portable for you to use.Packing list1 x swing spring