High quality: Our ceiling hooks are made of high-quality SUS304 stainless steel, which is rust-free, corrosion-resistant, high hardness, non-toxic and durable. Can be used permanently. Safe and reliable: Our ceiling hooks have a load capacity of up to 500 kg and the hammock hooks are super stable. Safe to use by both adults and children. 360 Degree Swivel Hook: Our hook can rotate 360 degrees and 180 degrees forward and backward. It is very convenient and flexible to use. Easy to install: The set comes with 1 stainless steel hook, 1 carabiner, 3 concrete screws, 3 hex screws, 1 drill bit. You can use it to complete the installation in a few minutes. Wide range: Ceiling hooks are suitable for indoor and outdoor use, perfect for concrete ceilings and wooden beams, hammock swings, chairs, sandbags, lamps, sling trainers, yoga, canopies, sling trainers and more.