Set of 60 Power Springs Standard Edition – 17.8 cm – for trampoline 08 Do your trampoline springs need to be replaced? This complete set of Standard Edition springs of 60 pieces is suitable for the round Avyna Pro-Line 08 trampolines with a diameter of 245 cm. The length of the feathers is 17.8 cm. Standard Edition springs are suitable for everyone from young to old. The springs are extra safe, because there is a rubber cap around the ends. Do you want to get more out of your trampoline and jump higher, for example, or are you an advanced jumper? Then you can also opt for the Sport Edition or Exterme Sport edition springs. How do you measure the trampoline spring? Not sure if this is the right size spring for your trampoline? Then measure the spring. You do this by measuring from hook to hook as soon as the spring is not tensioned.