It can be used to adjust the tension movement on the cam belt. The timing belt measures the load (NM). It is suitable for use in different widths of timing belt. It is easy to use. Knurled knob marked for accurate measurement. Dual scale allows reading from above or below Name: Car Belt Tensioner, Automotive Belt Tension Gauge Type: Generator Belt Coil Removal Tool Color: Silver Material: Metal Package Contents: 1 x Generator Belt Coil Removal Tool Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.