Product Description 1. Universal Tool: For most Motorcycles ATV ATC scooters and Karts with Typical Screw-and-Locknut Adjustment systems. 2. Function: Allows precise valve lash adjustment without disturbing the setting when the lock nut is fastened. They allow optimum engine performance and prevent engine damage. 3. Knurled Knob Head: Upgraded 3 mm knurled knob head, ensure a precise and secure grip. The new adjuster driver's heads are heat-treated and chrome plated for durability. .
