The Micro 100 Runner Cutter Carbide 16T420 is a high-performance carbide end mill designed for high-speed machining of aluminum, brass, copper, and other non-ferrous metals. It features a 16mm diameter, 420mm overall length, and 4 flutes. The helical flutes provide efficient chip evacuation and a smooth cutting action. The TiAlN coating enhances tool life and heat resistance. Recommended speeds and feeds are 30,000-40,000 RPM with 0.004-0.012 IPR. This end mill is made in the USA from premium micrograin carbide for strength, durability and long tool life. It's precision ground for consistent performance.