Integrated repositionable wrench handle holds the lock nut while the drivers are used to loosen or tighten the valve adjustment screw 8 mm, 9 mm, and 10 mm lock nut sockets; and 3 mm square, 4 mm square, and straight slot type drivers included Allows precise valve lash adjustment without disturbing the setting when the lock nut is fastened Fits most motorcycles and ATVs with screw-type tappet adjustments Knurled knob on adjuster drivers ensure a precise and secure grip. TOOL TAPPET ADJ SET
