This item is a trampoline springs set, which is well made of premium galvanized steel wire, very sturdy and durable. This spring is suitable for installing a fixed trampoline. It is sturdy and has strong load-bearing capacity. It is a very professional trampoline accessory. Features -Color: As Shown -Material: Galvanized Steel Wire -Size: Approx. 13.50X2.20X2.20cm / 5.31X0.86X0.86in -The galvanized steel trampoline spring is made of galvanized iron wire to and rust caused by natural acid, moisture and oxidation. -The spring is thicker, the number of coils is larger, the cone is wider, and the load-bearing capacity is stronger. -It is small in size, light in weight, convenient to carry and store, and will not take up much space. -With a spring hook, it is easier for you to install and disassemble, bringing you great convenience. -Good material and , you can buy this durable trampoline spring at a very . Package list: 12 x Springs 1 x Hook