Heavy Duty and Long Lasting Swing Hanger : Premium 304 stainless steel Material, high hardness and sturdier for 1000 Pounds capacity; No Rust and No Corrosion for long-term use. Industrial quality&locknut Design : This Anti-Loosening nut adds insurance for your safety, Perfect swing hooks for all swing set products indoors or outdoors. Widely used in wood and concrete : Our swing hardware provides 2 screws for wood and 2 expansion bolt for concrete, Perfect for Ceiling, Punching Bag, Porch Swing, Hammock, Swing Chair, Ring, Yoga Swing, Boxing Equipment, etc. Easy to Install : You don't need to buy additional fixing screw accessories, the product can be quickly installed and used. TIPS: If you need an installation guide, we have provided instructions in the picture. 360Rotable Ring & Silent Design : Our swing hangers contain Nylon Wear-Resistant Gaskets on both sides to Prevent direct Friction and Noise;360Rotated freely, perfect for Punching Bag and some Yoga Exercise.