100% Brand new and high quality Trampoline Springs heavy Duty Professional Quality Carbon Steel 6.5 To 12 InchEach spring has a weight of 300 to 500 Grams and is manufactured from high grade carbon spring steel and is finished in a quality galvanised corrosion and wear resistant coating.The overall length is from the farthest extremity of the hook which measures an inch to the spring so to gain an approx actual spring length deduct 2 inches from the overall length stated, The diameter is also stated.These are a tested item manufactured to an exact tolerance and not a cheap imported item, a genuine manufacturer replacement item for professional trampolines. SpecificationType: Trampolines Sub-Type: SpringsMaterial: SteelSize: Length 5.5 Inch Features: High Quality & Heavy DutyColour: iverInclude35x SpringsNote: Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures, but not the same performance on different bodies as on the model. Thank youAbout Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact usDuring the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shoppingThanks for your cooperation and we& 39;ll make you feel satisfied."