Feature:1. [Versatile Fit] The jam nut valve adjustment tool is designed to offer simple valve clearance adjustments for various Japanese vehicle engines, easily loosening even the toughest, tightest jam nuts.2. [Ergonomic Design] This valve stud adjustment tool is equipped with a 7 1/2 inch adjustment handle providing ample leverage to loosen jam nuts. The socket also has a window cutout for easy alignment and more accurate adjustments.3. [Wide Application] The hex size of this adjustment tool is 10mm, making it suitable for valves with 10mm jam nuts and slotted valve adjusting studs.4. [Ease of Use] Check the position of the valve stud, align the valve adjustment tool with the valve stud, inspect the outline from the side, and ensure the screwdriver blade is correctly engaged for precise adjustment when tightening the lock nut.5. [Premium Material] Made of stainless steel, the valve adjustment tool is sturdy and long lasting, making it a useful tool for car enthusiasts to keep in their toolbox for convenient and practical use.Specification:Item Type: Jam Nut Valve Adjustment ToolMaterial: Stainless SteelApplication: Japanese car engines.Package List:1 x Jam Nut Valve Adjustment Tool