【1】Kit Includes This 8-piece hammock hanging kit includes a diamond pad, 4 wooden beam locking screws, a spring, a swivel hook, and a carabiner. 【2】High-quality materials: The spring is zinc-plated. Ceiling mount - 316 stainless steel plate with 4 wood screws to use for beams, wood, trees, or planks. A stainless steel carabiner to hang your hammocks or swing chairs. All these materials have good corrosion resistance and toughness. 【3】Super strong: The spring can load up to 200 kg. The spring can relieve stress from impacts at work and increase the life of the mounting hardware. The swivel hook allows 360 degree rotation which can prevent tangling or twisting. 【4】Easy to Use: All kits come with detailed instructions in the pictures, all you need is a screwdriver. The kit allows you to relax without any hassle. 【5】You can screw the hanger into the solid wooden beams or boards. Ideal for all major types of hanging chairs, including swings, hammocks, hanging chairs, punching bags, etc.