• 40 x 5.5Replacement Trampoline Springs: Trampoline Springs are designed to replace your trampoline's rusted, worn out, dangerous springs and return bounce to your old sagging mat
• High Quality: The Trampoline Mat Spring made of heat treated premium galvanized steel, rust resistance, can be use in humid/wet environments for a long time
• Apply To: Aim to assemble your trampoline and fit for the frame Size 8ft 10ft 11ft 12ft 13ft 14ft
• Professional Design: Slightly Curved Shape, More Durable And Higher Tensile Strength Than Those Shaped Straight; Hooks For Firm Hold, No Fear About Springs Coming Off When Jumping
• Guidance & Buy with Confidence: Before purchasing, please measure the length of your original unstretched springs from end to end to make a choice