The MAC Tools spark plug gap gauge FG-25 is a high-quality hand tool designed for automotive use. Made by the reputable brand Mac Tools in the United States, this single item set ensures precise measurement of spark plug gaps. With a manufacturer part number of FG 25, this gauge is a reliable tool for accurate inspection and maintenance of spark plugs in various vehicles. Perfect for both professionals and auto enthusiasts, this precision measuring tool is a must-have for anyone looking to ensure optimal engine performance.