The Snap On Tools RTD42 Tap & Die Rethreading Set is a comprehensive tool kit designed for automotive maintenance and repair this set features both SAE and metric measurements for universal use. Made by Snap-on, a trusted brand in the industry, this set is perfect for professionals and DIY enthusiasts alike. The durable case ensures easy storage and portability, making it a convenient addition to any toolbox. Please note in the pictures that there are a few pieces missing from the 42 piece set.