Safe and Reliable & Easy to Install: Our premium stainless steel ceiling hooks provide maximum protection against rust and corrosion, supports up to 450 kg with high-quality welding process, suitable for indoor and outdoor installation. We have pre-drilled two holes for screwing onto wooden beams or concrete, can be installed in minutes. 【360° Rotatable Design】Design with a heavy-duty load-bearing hook, the hook can be rotated 360° and swiveled 180° forward. Makes the hook more flexible,But less shaking. To ensure safety, we have mounted a SUS304 stainless steel O-ring (stainless steel) to prevent the shaft from slipping. In addition, the hook loop is strong enough to ensure safety. 【Pure Boneless】The hanging chair swing spring kit provides a smooth and comfortable swing, and allows you to see your suspension by absorbing shocks. With the steel spring, you can regain your hanging chair and make it the most demanding seat at home. Versatile Use: Professional ceiling mount and stainless steel spring perfect for hanging chairs, hanging lamps, love swings, hammocks, punching bags, sling trainers, yoga canvas, shade sails, sling trainers, hanging chairs, hanging niches, hanging seats. Package Contents: 1 ceiling mount, 1 swing spring, 2 carabiners, 2 screws for concrete application, 2 screws for wood application.