Product description Details: Material: stainless steel Properties: corrosion protection and rust protection Color: style 1, style 2 Packing area: 2 x carrying fastening buckles, 2 x carabiners, 4 x screws, 4 x expansion screws 1. Large areas of application: For indoor and outdoor use, suitable for concrete ceiling and wooden beams, best anchoring solution for all suspension belts and resistance trainers, hammock swing kit. 2. Safe and reliable Heavy duty commercial quality swing hangers are rated for use by children and adults, and for living areas with a 250KG rating feel safe and secure. 3. Innovative design: design with a strong heavy-duty hook, the hook can be rotated 360 and swung back and forth with 180. To ensure safety, we have installed a stainless steel O-ring to prevent the shaft from slipping out. The hook's buckle is also strong enough to ensure safety. 4. CORROSION RESISTANCE, HIGH HARDNESS: 304 stainless steel rings made from high quality raw materials. No rust, corrosion resistance, high hardness, non-toxic and pollution-free environment. Suitable for any scene. 5. EASY TO INSTALL: We have pre-drilled two holes for screwing onto wooden beams or concrete.