We currently stock 2 main lengths of straight trampoline replacement poles. One that suits an 8 foot trampoline and a longer one that suits all other sizes, 10, 12, 13 and 14 foot trampolines. Our poles come complete with foam padding around them and their own brackets that fix to the trampoline leg at the appropriate height for your nettings.
Check that your poles are straight ones that attach to the outside of the trampoline. You could also measure the height of your trampoline from the ground to the frame and then from the frame to the top of the netting to work out if the pole length will suit.