Function: The belt tensioning tool is used to measure the tension of flat, drive belts and toothed cam belts, where the tension is specified as the movement of the belt against the applied load (Nm). Easy to Use: Adjusts the tension of drive belts on various and camshaft belt thicknesses Professional Tool: Adjustable dual scale graduations (Nm) readable from front and back of tool. Material: Made from Metal with a smooth rolling screw action and knurled grip edge for maximum grip and durability Compact: Car Drive Timing Belt Tensioner is compact and easy to use on belts of any width. Name:Timing Belt Tension Tester Type:Auto parts Colour:As Shown Material:Metal + Plastic Package Contents: 1 x Timing 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.