The T-Hook design is comfortable,Spring hook grip is the perfect shape and size, Plastic Handle with Finger Grooves For comfort, support, and a strong grip. Good quality for low spring installation tool: handle and pull hook molding, Pull tool made of high quality of plastic and metal which is sturdy and durable that you do not in the process of use. This spring pull tool also known as T-Hook, will help you slide the springs into trampoline frame when you install your jumping mat. Widespread Use : the t-hook tool is a standard type, fit for most strength springs.It is not only used for trampoline springs, also for spring disassemble and assembly of home machines. Colour: Black Material: plastic + iron 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.