ZDD STURDY AND COMPLETE: Made of premium 304 stainless steel, durable, high strength, corrosion resistance, high hardness, rust resistance, waterproof. More robust and safer.Wide scope of application: Our hanging chair springs can be used for hammock, punching bag stand, swing, yoga towel, childrens hanging chair, swing, Swiss chair, hanging seat, love swing, sling trainer, etc. 360 Rotation Design: The stainless steel swirl allows 360 free rotation to prevent your suspension (rope, chain, webbing, etc.) from spinning and protect it from wear and tear.Packing list: 1 carabiner with spring (15 cm long), 2 climbing loops (8 cm long) and 1 rotating hook 360 (9 cm long). All parts are made of stainless steel and provide a more stable, smoother and safer suspension.Easy to assemble: the two large carabiners are simply hooked into the eyelets of the spring, the carabiner can support a maximum load of 250 kg. With the steel spring, you can easily and safely hang hammocks, hanging chairs. The unique integrated design can be installed in minutes.