YG-1 EM810 Carbide Micro Square Nose End Mill, Metric, TIALN Multilayer Finish, 30 Deg Helix, 2 Flutes, 40mm Overall Length, 0.8mm Cutting Diameter, 3mm Shank Diameter Miniature end mill has small cutting and shank diameters for better control than larger tools when creating precise details and contours Suitable for high-precision machining of high-hardened steel up to Rockwell hardness C70 Two flutes offer better chip-carrying capacity than end mills with more flutes, enhancing the tools ability to remove material Titanium aluminum nitride (TiAlN) coating lubricates the end mill for high-temperature stability and abrasion resistance at high cutting speeds, offering better heat resistance than TiN and TiCN coatings High-performance carbide provides better wear resistance and toughness than standard carbide and can run at higher speeds than high-speed or cobalt steel, resisting wear and high cutting temperatures