Heavy Duty &Strongstrength holdingcapacity:Our hammock hanging hooks accessories are made of durable and heavy-duty galvanized carbon steel,Anti-rust and anti-corrosion and high hardness to ensure safety use 550 pounds capacity, 275 pounds for each.no worries forinstalling it outside. It will hold 2 adult's weightwhile enjoying your hammock time. 2 pieces in a package; Multi-Scene Use:You can install it on a ceiling, veranda, garden, gazebo, living room, bedrooms or any other structure in your home... Durable, weather-resistant finishfor our products,so you can use outdoors as well,it can not been use to the wall; Easy to Set Up:This hammock eye hook isveryeasy and simpleto install, can be installed directly with a wrench or electric drill, Use a drill slightly smaller than the screw hook, then drill a hole into the ceiling joist.Insert the tip of the hook into the hole, then twist it all the way in. So that they can be used with every kind of hammock strap. Why You Need It: If your and your friends usually spend times hanging with hammock, training Yoga or other indoor-outdoor relaxation, this heavy duty hooks for hanging will bethe MUST HAVE item; Large in SizeThe hooks total measures 7.5 inches (19 cm) long and 0.79 inches (2 cm) wide at the opening, great for hanging big and heavy objects.the second Pic for detailed dimensions; Perfect after-sales service:We guarantee that there are any problems with the products you receive, and we will respond to your satisfaction as soon as possible.