Features - Made of galvanized iron. Higher corrosion resistance is difficult to rust and more durable. Good performance. Can be used with confidence. Function - Springs help reduce vibration pressure, provide more comfortable, softer feelings, and extend the life of the hammock beyond the mounting surface. Easy Assembly - Both ends with hooks, the porch rotating spring can be easily connected to your hammock without using any tools or complex operations. Replacement Spring - Suitable for garden swings, hanging baskets, and hangers. Specifications - Package: 8mm spring tension * 3. Material: galvanized iron. Weight: 250 grams per unit. Length: 115mm. Hammock Spring, Heavy Duty Spring Hanging Hammock for Hanging Chairs, Outdoor Accessories, Garden Swing Hook (8mm) Specification: Material: Galvanized iron. Weight: 250 grams per unit. Size: length 115 mm. Color: Silver. Quantity: 3*8mm Features: lightweight. It is very convenient to carry. - Galvanized, which increases the ability to resist bad weather. NOTE: 1. For manual measurement, please allow 1-3 cm error. Make sure you don't mind before bidding. 2. Due to differences between different displays, the image may not reflect the actual color of the project. Take the actual as standard. THANK YOU! 3. Remember to check the condition of the hammock before use.