Trampoline Part Store&reg; 5.5" Inch *Ultra-grade* Trampoline Springs, Quantity of 72, Fits Walmart, Skywalker, Bounce Pro, Jump Zone, Parkside, Sportspower, Academy, Sports Authority, Big 5, Dick's, Etc. Trampoline Part Store 5 1/2" Inch Trampoline Springs, Extension Spring, Farming, Ranching, Machinery, Maintenance, Home Repairs Top Quality (30-Coils) Trampoline Springs, made for the ULTIMATE, EXTREME BOUNCE!! Quantity of 72-Per Pack The Outside Diameter of our Springs are 1.1 inches, we use 8-gauge high tenacity steel Music wire, The Wire Diameter of our Springs is 0.125 of an inch thick (1/8 inch). The Measurement is Over The HOOK Trampoline Part Store Will fit any trampoline requiring the specific spring length shown, Plus or MINUS up to 1/4 inch Replace your Springs with a set of our Made in the USA Springs