Jumpking JP1514 - Manual (Page 4)

The last step is to attach key #3 to the end of key #2.
Now, repeat this step with the other top rails, making a total of five top rail sections.
“Underside” “Top of Tube”
You now have assembled one section of top rails.
Key #3
5 Spring holes on top
2 Spring holes on the bottom
(7 Spring holes total)