Usage Tips:Sturdy and Complete: Made of premium 304 stainless steel, durable, high strength, corrosion resistance, high hardness, rust resistance, waterproof. More sturdy and safer. Wide scope of application: our hanging chair springs are applicable for hammock, punching bag stand, swing, yoga towel, children's hanging chair, swing, Swiss chair , hanging seat, love swing, sling trainer, etc. 360 rotation design: the stainless steel swirl allows 360 free rotation and thus quickly turns your suspension (rope, chain, webbing, etc. ) and protects it from wear. Scope of delivery: 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 withstand a load maximum 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.