①. Sturdy material: 304 stainless steel ring, made of good raw materials. It does not rust, is corrosion-resistant, has high hardness, and is non-toxic and environmentally friendly. The maximum load of this product is 450kg, which is suitable for various scenes. ②. 360-degree rotating design: This hook becomes more flexible when rotated. The innovative design of the detachable self-rotating hook allows for more flexible use. The installation is very simple. Just pre-drill two holes in the wooden beam or concrete, then screw in the screws. ③. Easy to install: Pre-drilled two holes for screws to be fixed to the wooden beam or concrete, and pre-drilled expansion screws for concrete installation can be completed in minutes. ④. Scope of application: indoor and outdoor, suitable for concrete ceilings and wooden beams. It is a good mounting solution for suspension straps, resistance training equipment, swings, hammocks, sandbags, exercise equipment, and awning sets.