【Quality materials】304 stainless steel rings made of high-quality raw materials. No rust, corrosion resistance, high hardness, non-toxic and pollution-free environment. Suitable for any scene. 【Easy to Install】This product has 4 holes on the mounting surface with bolts to ensure sturdiness and security, which performs well in practical use. Pre-drilled expansion screws for concrete application installed in just minutes. 【Spring loaded carabiner hook】Versatile fastening, rigging and anchoring equipment - Allows quick connection/disconnection of ropes, chains, straps; Opens and closes smoothly as the spring-loaded gate makes it easy to secure important items. 【Rotate 180°】180° rotation, custom-made silent nylon bushing and specially designed lubricating grease to prevent metal friction, creating a quiet, smooth and exceptionally low-maintenance swinging motion. 【Widely application】For indoor and outdoor use, applicable to concrete ceilings and wooden beams, the best anchoring solution