Sufficient Quantity: sufficient quantity is enough to meet your daily using and replacing needs, protect the trampoline structure and prolong the service life of the trampoline. Sturdy Material: the trampoline spring is not easy to rust, wear or tear, prevents rust and fading caused by oxidation, and maintains the elasticity of the trampoline. Quality and Serviceable: trampoline springs are wider in the middle and narrower at both ends, which can reduce resistance, have stronger tensile strength, low noise, good stretchability, will not be easily deformed by gravity, provide elasticity for your trampoline, so you can adjust the stretch in time. Compatible Size: compatible with most sizes of trampolines, trampoline springs are designed to replace your rusty, worn out. Colour:Silver Material:Stainless steel Package Contents: 20 * Trampoline Spring Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.