Features 1. Function: This hand tool allows micro adjustment without disturbing the locknut, which can be tightened once the correct clearance is achieved. 2. Driver Design: The square-type driver features a knurled handle for a secure grip; the textured surface provides increased grip pressure, making operation easier. 3. Package Includes: Two locknut sockets (8mm and 9mm) and one 3mm square-type driver to assist in efficient repair work. 4. Operation: Use a 12mm wrench (not included) to hold the locknut socket while using the square-type driver to loosen or tighten the valve adjustment screw. 5. Practical Design: Constructed from chrome vanadium steel for high strength and durability; resistant to bending and breaking; compatible with most motorcycles and ATVs equipped with screw-type tappet adjustments. Specification Item Type: Tappet Valve Adjustment Tool Material: Chrome Vanadium Steel Fitment: Compatible with most motorcycles and ATVs with screw-type tappet adjustments Package List 2 x Locknut Socket 1 x Driver