This hammock hanging kit is made of premium 304 stainless steel, which is sturdy, rust-proof, corrosion-resistant and long-lasting. The swing hooks can support heavy weights safely, thickened materials that deliver reliable durability and security, letting you hang your swing chair easily and confidently for safe use by both kids and adults without worrying about sudden falls or accidental injury. The black swing hangers feature 180degree(s) plus 360degree(s) silent rotation, allowing full directional movement without tangling or deforming. You can adjust your hammock to any desired angle for maximum comfort and relaxation during use. Installation is quick and easy, no special tools or skills required. You can mount it on concrete ceilings or wooden beams, the kit comes with hexagonal ground bolts for concrete use and screws for wood applications. It easily connects to hammocks, swing chairs, sandbags and other items you wish to hang, making it a great helper for outdoor camping trips.