Precision Twist E3304MV Carbide Square Nose End Mill, Metric, TiAlN Multilayer Finish, 30 Deg Helix, 4 Flutes, 70.0mm Overall Length, 10.00mm Cutting Diameter, 10mm Shank Diameter Suitable for machining steel, hardened steel, steel alloys, stainless steel, cast iron, titanium, titanium alloys, nickel, and nickel alloys Four flutes produce a better finish than fewer flutes 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 Carbide can run at higher speeds than high-speed or cobalt steel, resisting wear and high cutting temperatures Center-cutting design allows the end mill to plunge into material like a drill bit while also performing conventional surface milling