SincereetaliFeatures - Made of galvanized iron. Higher corrosion resistance is difficult to rust and more durable. Excellent performance. Can be used with confidence. Function - Springs help reduce vibration pressure, provide more comfortable, softer feelings and extend the life of the hammock in addition to the mounting surface. The assembly is simple - both ends with hooks, the porch swing spring can be easily connected to your hammock without using tools or complex operations. Replacement spring - Suitable for garden swings, hanging baskets and hangers. Specifications - Package: 8mm Tension Spring * 3. Material: galvanized iron. Weight: 250 grams per unit. Length: 115 mm. Hammock Spring, Hard Spring Hammock Suspension Spring for Hanging Chairs, Outdoor Accessories, Garden Swing Hook (8 mm) Specification: Material: galvanized iron. Weight: 250 grams per unit. Size: length 115 mm. Color: silver. Quantity: 3 * 8 mm Features: Lightweight. It is very convenient to carry. - Galvanized, increasing the ability to withstand bad weather. NOTE: 1. For manual measurement, please allow an error of 1-3 cm. Please make sure you do not mind and then bid. 2. Due to differences between different displays, the image may not reflect the actual color of the project. Please take the actual standard. Thank you! 3. Remember to check the condition of the hammock before use.