Check the listing for details. Marson 39203 Metric Thread Setter Kit Rivet Nut Tool M4 M5 M6 M8 Complete Case. Condition: Used. Listed at 60.00 USD. The Marson 39203 Metric Thread Setter Kit is a comprehensive tool set designed for setting rivet nuts in metric sizes ranging from M4 to M8. This kit includes all the necessary components in a convenient case, making it easy to store and transport. With a focus on precision and quality, this product from Marson is ideal for automotive professionals and DIY enthusiasts alike who require reliable threading tools for their projects.