Material: Heavy-duty spring hook made of high quality stainless steel. Sturdy steel construction, excellent performance. Maximum load 250kg. With hooks on both ends, the porch swing spring easily connects to your hanging chair and punching bags, allowing you to twist and turn without tangling or twisting. p> Easy to use: hammock spring with hooks on both ends. The hammock chairs swing easily with this hanging set. Easy to install in homes, gardens. Multi-function spring hooks: hanging chair spring for hanging items, almost suitable for hanging chairs, swings, hammocks, sandbags, hanging tents, suitable for whatever you attach to want to attach to the ceiling and swing. International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.