The Snap-On 42 Piece Fractional / Metric Rethreading Set is a high-quality hand tool set designed for automotive use. This tap and die set includes both fractional and metric sizes, making it versatile for various projects. With the trusted Snap-on brand and durable construction, this set is a reliable option for those in need of precise threading tools. Additionally, the set includes 42 pieces, providing comprehensive coverage for a wide range of rethreading needs.