Wide Applications: For indoor and outdoor use, suitable for concrete ceiling and wooden beams, best anchoring solution for all suspension straps and resistance trainers, hammock swing kit. Safe and ReliableHeavy duty commercial quality swing hangers are for children's use and adults rated, and for residential use with a 450KG rating feel safe and secure. Easy to Install: We have pre-drilled two holes for screwing to wooden beams or concrete. Includes 4 concrete anchors and 4 hex screws, and a unique one-piece design and can be installed in minutes. Innovative Design: Design with a strong heavy duty hook, the hook can be rotated 360 and swiveled back and forth with 180. The buckle of the hook is also strong enough to ensure safety. Sturdy and complete: 304 stainless steel rings made of high-quality raw materials. No rust, corrosion resistance, high hardness, non-toxic and environmentally friendly environment. Suitable for any scene. Attention:Not suitable for children under 14 years. Use under adult supervision