Features: *The lock nut valve adjustment tool is designed to offer simple valve clearance adjustments for various Japanese vehicle engines, easily loosening even the toughest, tightest lock nuts. *This valve stud adjustment tool is equipped with a adjustment handle providing ample leverage to loosen lock nuts. *The socket has a window cutout formore accurate adjustments. *The hex size of this adjustment tool is 12mm, making it suitable for valves with 12mm lock nuts and slotted valve adjusting studs. *Check the position of the valve stud, targetthe 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. Specifications: Product name: Lock Nut Valve Adjustment Tool Material: Stainless-steel Color: Black Size: No Interface: 12mm Oblique interface: 1/4 (6.35mm) Application: Japanese car engines Package Content: 1 x Lock Nut Valve Adjustment Tool Note: 1. Transition: 1cm=10mm=0.39inch. 2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 3. Please allow slight manual measurement deviation for the data. _x000D_ _x000D_