Hanging Chair Spring Extension Steel Suspension Hook Spring For Hanging Porch Swings Extension Spring Heavy Duty Extension Suspension Hook Set Spring made of high-quality steel, strong and durable, rustproof, corrosion-resistant, high hardness. Can be used with confidence. Low noise, stress, and vibration. The spring helps reduce stress from impacts, provides a more comfortable, softer feel, and extends the life of your hanging chair, in addition to your mounting surface. The spring with hooks at both ends, the porch swing spring is easy to connect to your hanging chair without using any tools or complicated operations. The spring is suitable for almost all porch garden patio and yard swing, hanging chair, hammock chair, punch bag, cocoon, rattan egg chair rattan basket and so on. International products have separate terms, are sold from abroad and may differ from local products, including fit, age recommendations, and language of product, labeling or instructions.