High Quality MaterialThe Hammock Chairs Swing Spring Sets is made of high-quality chrome-plated 304 stainless steel.The surface has a waterproof and transparent coating, high hardness, no rust, no corrosion, recyclable, no pollution to the environment, environmental protection and sanitation, strong and durable, and longer life. Multifunctional UseThe Hammock Hanging Kit Safe for Hammock Chairs or Ceiling Mount Porch Swings,Yoga, porch swing, hammock, sandbag, hanging chair, lamp, sling trainer, awning, sling trainer, chair, backyard and swimming pools, cave and more, Whether Indoor and outdoorCan be widely used in various occasions. Unique Design:Our Porch Swing Springs are Made of heat-treated stainless steel springs, one piece weight capacity of 600lbs, Introducing a unique even suspension system can increase the elasticity of your beloved hammock without being too stiff or too weak. Package Include:The Hammock Hanging Kit contains 2 pcs springs 304 stainless steel Springs. Each end of the swing spring has a rubber tip preventing you from scratching your fingers or hands When you install the spring. AFTER-SALES SERVICEAmazon official warehouse and distribution,safe and fast, if you have any questions during use, please send an email at any time, we will help you solve the problem in the first time