Niagara Cutter N66044 High Speed Steel (HSS) Square Nose End Mill, TiN Finish, Roughing and Finishing Cut, 35 Degree Helix, 2 Flutes, 1.5" Overall Length, 0.125" Cut Diameter, 0.188" Shank Diameter The tool has a 3/16 shank diameter and a smaller cutting diameter, allowing better control over the size of the cut than larger tools when creating precise details and contours Two flutes offer better chip-carrying capacity than end mills with more flutes, enhancing the tools ability to remove material Titanium nitride (TiN) is a general-purpose coating that combines high-temperature resistance and increased hardness compared to uncoated end mills High-speed steel is compatible with a variety of materials Square nose end mills (also called square end) create sharp, unrounded cuts