Schley Tools - UNIVERSAL VALVE ADJUSTMENT TOOL FOR JAM NUT (10MM & 12MM)

This 2-in-1 valve adjustment tool is designed for vehicles with 12mm jam nut valve screws, offering precise control during adjustment. A built-in window lets technicians view the screwdriver blade position while tightening the jam nut, ensuring accuracy. The pivoting handle allows continuous visibility from either side, improving ease of use in tight engine spaces.