A 6 mm micro end mill is a cutting tool used for precision milling, typically made of solid micrograin carbide for durability and wear resistance. These tools are designed for tasks like slotting, profiling, and 3D milling in a variety of materials, including hard metals and plastics. Key features often include a 6 mm shank, various flute counts (e.g., 2, 3, or 4), and a range of flute lengths and overall lengths.