Ⅰ. The T-Hook design is comfortable. Spring hook grip has a shape and size that fits well. Plastic Handle with Finger Grooves For comfort, support, and a strong grip. Ⅱ. The handle and pull hook are molded. The pull tool is made of plastic and metal, which is sturdy and durable during use. Ⅲ. This spring pull tool, also known as T-Hook, will help in installing the springs into the trampoline when setting up the jumping mat. Ⅳ. The t-hook tool is a standard type, fit for most strength springs. It is not only used for trampoline springs, but also for the disassembly and assembly of springs in home machines. Ⅴ. Colour: Black Ⅵ. Material: plastic + iron Ⅶ. Package Contents: 2 * Trampoline Spring Pull Tool Ⅷ. Only the above package content, other items are not included. Ⅸ. Note: Light and different displays may cause the color of the item to be a little different from the real one. The measurement allowed is +/- 1-3cm.