This is a trampoline spring and hook set, made of galvanized steel wire material, strong load-bearing capacity, can be installed very easily, can perfectly support the trampoline, so that the trampoline does not allow collapse. Features -Color:Assorted Color -Material:Galvanized Steel Wire -Size:10.00X2.20X2.20cm/3.93X0.86X0.86in(Spring) - Replacement springs to meet your different needs. It is a good choice to replace the old spring. - The trampoline springs have good workmanship, wear-resistant and durable for . - 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 and can make your trampoline give you a better bounce experience. - And the structural reliability is high, suitable for withstanding impact and dynamic loads, and has . Package list: 20 x Trampoline Springs 1 x Hook