Check Size First: Available in 3 sizes: 5.5 in / 6.5 in / 7 in, in total length including hooks. Please measure your old trampoline springs carefully before purchase and choose the correct size. Strong Bounce: Designed with a barrel-shaped coil, wider in the middle and narrower at the ends, these springs provide reliable tension, strong stretch resistance, and responsive bounce for a better jumping experience. Galvanized Steel Build: Made from quality steel with a galvanized finish, these trampoline replacement springs are designed for strength, elasticity, and outdoor use. The protective surface helps resist rust and oxidation, keeping the springs durable and reliable over time. Secure Hooks: Both ends feature angled hook designs for a firm and stable connection to the trampoline frame and mat. The enhanced hook angle helps improve grip and reduces the chance of springs slipping off during jumping. 72-Pack with Tool: Includes 72 trampoline springs and 1 T-hook spring pull tool, giving you enough quantity for daily replacement needs. The included pull tool makes removing and installing springs easier and more convenient. Please measure your original trampoline spring from hook end to hook end before ordering. Replace worn or damaged springs promptly, and make sure the trampoline frame, mat, safety pad, and other components are in good condition before use.