[Versatile and Widely Used] Heavy duty ceiling hooks can be used for indoor aerial yoga, gymnastics rings, boxing equipment, resistance trainers, balcony hanging baskets, hammocks, TRX or pump bags, sling trainers, half egg seats, outdoor children's swings, hanging chairs, sun sails. [Easy to Install] First press the rustproof hook on the ceiling to mark it, then drill four holes according to the mark, finally install the screws and fixing discs and tighten them, then fix the spring hook and swivel hook. The spring hooks are equipped with a safety lock to prevent objects or equipment from slipping. [This heavy duty ceiling hook has a load capacity of 400 kg and all its components are made of high quality stainless steel, with good welding technology, hardness, rust resistance, corrosion resistance, wear resistance and durability. Ideal for hanging heavy equipment or home accessories. Can be mounted on concrete ceilings or sturdy walls. [The ceiling hanger consists of a strong U-shaped fixing hook (4 drilled holes) + 4 heavy duty screws + a swivel ring (360 degree swivel) + 1 spring carabiner (180 degree swivel). Ideal for hanging sandbags from concrete ceilings and sturdy wooden beams quickly, safely and stably. [Ideal for Fitness Enthusiasts] The heavy duty ceiling hooks are smooth and burr-free, safe for hands, suitable for gifting to people who have hammocks, hammocks, and who love fitness at home, if you have any questions during the installation process, please contact us~.