Description This heavy duty spring made of zinc-coated wire is suitable for hanging hammock chairs other hanging accessories like punching bags, hanging plants, etc. Easy to install operate, can bring you great convenience. Wear-resistant, rust-proof, corrosion-resistant, not easy to deform break. Practical durable. Features -Color: As Shown-Material:Galvanized Steel Wire-Size: Approx.13.50X2.20X2.20cm /5.31X0.86X0.86in-Replacement springs to meet your different needs. It is an choice to replace the old spring. -Which is corrosion-resistant, wear-resistant durable. long service life. -When installing, just hook the hooks at both ends of the spring to the supporting net at the bottom of the trampoline. -Our springs have good tension can make your trampoline give you a better bounce experience. - the structural reliability is high, suitable for withsting impact dynamic loads, has good seismic performance. Packing list: 12 x Springs 1 x Hook