Universal spring for fitness trampoline a spring that fits all trampolines available on the market with sizes from 244 cm to 305 cm. The trampoline springs are equipped with hooks on both sides to attach them to the edge of the trampoline on one side and to the mat on the other. Installation is simple and requires no tools. Corrosion-resistant and safe: The springs are made of hot-dip galvanized hardened steel, which makes them resistant to repeated stretching and weathering. They are durable. The high-quality material ensures that the springs do not break and that they perfectly absorb every jump. Resistance to high tension and loads our high-performance replacement springs have excellent elasticity and durability. They offer excellent bounce. Made in the European Union - Our production is carried out in the European Union, which is why we guarantee the quality and longevity of the products. The replacement tension springs fit all fitness trampolines and children's trampolines. Technical specifications - Dimensions: 140 x 22 mm. The springs fit all indoor and outdoor trampolines from 244 cm to 305 cm. Color: silver. Set of 4 pieces.Lonvre