To install the internal throttle cable or the internal twist grip for the left side (for example, clutch or brake), it is necessary to cut off the handlebar. Since this is associated with some measurement work and skill, we have constructed this useful helpful little tool to facilitate this step. You simply measure the appropriate length of the handlebar (as described in detail in the installation instructions), clamp the drilling-cutting gauge and set a cleanly guided, straight cut through. Then still in the vice clamp, the holes by means of suitable supplied drill set at the specified holes and everything is palletti!!! For workshops, frequent builders and "I-want-to-make-it-simple" people the perfect solution!