High quality: The hook is made of high-quality stainless steel to prevent rust, and is suitable for installation in various indoor and outdoor areas. Safe and firm: The 4-hole design of the ceiling bracket improves durability and stability. The precise welding process makes the hammock hook stronger and can safely support 500 kg. Wide range of uses: The hammock hook is very suitable for hammocks, chandeliers, hanging chairs, swings, yoga hammocks, boxing bags, sun sails, hanging holes and other heavy objects. Make full use of the top area to meet your various needs. Easy to install: Operation can be completed in ten minutes.Drill four holes, then tighten wooden beams or concrete. Including 4 concrete anchors, 4 hex screws. It can only be installed on hard buildings such as concrete ceilings. Not suitable for mud walls or other soft building materials. Products include: 1 ceiling bracket, 4 metal screws and pins (for concrete only), 1 carabiner and 1 rotating shackle.