T-HOOK : This tool helps you the spring into the trampoline and Quick when installing Your Jumping MatTrampoline spring pull hook,constructed from tough Steel and Hard Plastics.This spring pull tool also known as T-Hook, will help you slide the springs into trampoline 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:blackMaterial:plastic + ironsize:13cmPackage Contents:1 * Trampoline Spring Pull ToolOnly 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.