Feature 【Universal tool】For most Motorcycles ATV ATC scooters and Karts with Typical Screw-and-Locknut Adjustment systems. 【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. 【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. .
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