-HOOK : This amazing tool helps you get the spring into the trampoline frame Easily and Quick when installing Your Jumping Mat Trampoline spring pull hook,constructed from tough Steel and Hard Plastics. This amazing spring pull tool also known as -Hook, help you slide the springs easily into trampoline frame when you install your jumping mat. Spring puller tool,you can use it to pull a trampoline spring, or you can use it to pull something you can pull. Make installation , Faster and Easy colour:black Material:plastic + iron size:13cm Package Contents: 2 * Trampoline Spring Pull Tool Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.