SkyBound Trampoline Mat (Round, 14 Ft. Frame/Fits 72 x 5.5 Springs) 150 inch diameter trampoline jumping bed This replacement mat has 72 v-rings This mat is designed to fit 14 ft diameter trampolines (diameter of steel frame) This mat is designed to fit trampolines that use 5.5 inch springs (springs must be measured off the trampoline, unstretched, from hook end to hook end) **SPRINGS ARE NOT INCLUDED** Includes a free spring pull tool! a $9.99 value!