This set of 2 high-quality round dies is a must-have tool for any DIY enthusiast or professional mechanic. Designed to create perfectly threaded holes, these metric M4 dies are made from durable high-speed steel for long-lasting use. With their precise design and construction, these dies are ideal for use in a range of applications, including automotive repairs, metalworking, and plumbing. Whether you're working with soft metals or tougher materials like stainless steel, these dies are up to the task. So if you're looking for a reliable and versatile threading tool, look no further than this set of 2 CNC dies.