Niagara Cutter N44516 Cobalt Steel Square Nose End Mill, Weldon Shank, TiN Finish, Roughing Cutting, Non-Center, 30-Degree, 4-Flute, 3.25" Overall Length, 0.500" Cut Diameter, 0.500" Shank Diameter Roughing end mills have chip-breaking cutting edges that remove material in less time than conventional end mills Fine-pitch tooth design is suitable for machining high-temperature alloys Titanium nitride (TiN) is a general-purpose coating that combines high-temperature resistance and increased hardness compared to uncoated end mills Square end creates sharp, unrounded cuts and has a corner chamfer to strengthen the cutting edges Number of flutes varies by diameter for optimum feed and cut rate