From the manufacturer The tool is constructed from rugged materials so that it remains effective and endures much use. Spring Pull Tool Small and Handy This tool is a must have for anyone who owns a trampoline. It allows you to get the springs into the trampoline frame quickly and easily when setting up your trampoline. Having more than one tool makes it even easier, faster and better when you set up your trampoline mat! Two people can work faster together and achieve the perfect tension in the trampoline jumping mat by working opposite each other. Long and Wide For ultimate strength and leverage. Strong Metal Hook End For efficient and effective use. Plastic Handle with Finger Grooves For comfort, support, and a strong grip.