1. It measures the tension required to depress the timing belt, allowing you to adjust the position of the timing belt tensioner to the exact position. 2. the installation process of the timing belt and avoid the belt from vibrating due to being too loose, or making abnormal noise due to being too tight. 3. The tool features an adjustable dual scale, which allows readings to be taken from both the front and rear ends of the tool, making it easy to operate. 4. Made of high-quality alloy steel, the smooth rolling screw and grooved handle edge maximize the feel and durability. 5. Suitable for cam belts of various widths, it is the for your personal auto repair shop or professional auto repair shop. : Timing belt tension check tool, used to check the timing belt of the vehicle, the manufacturer specifies that the timing belt tension should be set according to the meter at a specific position on the belt span between the pulleys. Color: As shown Material: Metal Package Contents: 1 set of automobile engine belt tension tester Only the above package content, other products are not included. Note: Light reflection 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.