The K-D Tools 14mm and 18mm Thread Restoring Tap Rethreader Model 730 is a single item hand tool designed for restoring threads and used as spark plug openings. Made in the United States by K-D Tools, this product is specifically designed for threading tasks and comes in one piece. With a focus on quality and precision, this thread restoring tap is a reliable tool for automotive maintenance and repair. Both tap thread sizes are in perfect condition.