Sturdy Material: The hook part of the trampoline spring tool is made of iron. The diameter of the hook is 5 mm thick. Sturdy and strong. The surface is plating treatment. Not easy to rust and can be used for a long time. Anti-Slip Design: The hook-shaped handle adopts a finger groove design, which is more comfortable for your fingers when pulling, reduces the resistance when pulling, and makes installation more convenient and quick. Easy to Use: You just need to hook the double-hook spring to one corner of the trampoline, and then hook the other end of the spring to the T-shaped spring hook. With a little force, you can hook the spring to another corner of the trampoline. Easy to Carry: The trampoline spring tool is convenient and compact, and the length is only the size of a palm, it can be put in your bag at will, and it is easy to carry wherever you go. Wide Uses: The trampoline spring pull tools T-hook can not only easily install and remove the spring from the trampoline, but can also be used to pull tent nails.