KIT INCLUDES: This 8-piece hammock kit includes a diamond pad, 4 wood beam lag screws, a spring, a swing hook, and a carabiner. High-quality material: Springs are galvanized. Ceiling Bracket - 316 Stainless Steel Diamond Pad with 4 Wood Screws for beams, lumber, trees or planks. Stainless steel carabiner for hanging hammock or rocking chair. All of these materials have good corrosion resistance and toughness. Super strong: can hold up to 200 kg. Springs relieve stress from shocks on the job and extend the life of your mounting hardware. The swivel hook allows for 360-degree swivel and prevents tangling or twisting. EASY TO USE: All kits come with detailed instructions in pictures. All you need is a screwdriver. This set allows you to relax without any problem.