The Marson Thread Setter Kits, Models 39202 and 39203, are designed for setting threads on SAE and Metric sizes. This set includes 2 pieces and is perfect for automotive and industrial applications. Made in the United States, these kits come with a manufacturer part number and are ideal for professionals looking for high-quality threading tools. With a focus on precision and durability, the Marson Thread Setter Kits are a reliable choice for any project requiring the setting of threads.