This replacement jumping mat is for Bazoongi/Jumpking trampolines that have a 14 frame, and use 96 5.5" springs. When measuring a spring be sure to take it OFF the trampoline and measure the entire length, hook end to hook end. Also be sure the coils of the spring are not stretched when you measure, they must be tightly compressed to get an accurate measurement. Springs are not included this is just the replacement mat with 96 rings stitched on it.