You can bolt the bracket to sturdy wooden or concrete beams. Ideal for all types of hanging chairs, including swings, hammocks, punching bags, hammock chairs, yoga hammocks, or any other heavy objects suspended from a bracket. Easy to use: All kits come with detailed instructions (see images). Heavy duty: Can hold up to 150 kg. Prevents tangling and twisting. High-quality metal materials for hanging your hammocks or swings. All of these materials offer excellent corrosion resistance and high strength. Material: Metal