Variable spacing between the flutes reduces vibration, allowing these end mills to provide fast cuts, smooth finishes, and long tool life. They have a high helix angle and a wear-resistant coating for excellent shearing and chip removal in stainless steel and titanium. Made of solid carbide, they are harder, stronger, and more wear resistant than high-speed steel and cobalt steel end mills for the longest life and best finish on hard material. Their extreme hardness means they are brittle, so a highly rigid setup, such as a CNC machine, is necessary to prevent the end mill from breaking. End mills have a square end for milling square slots, pockets, and edges. All are center cutting, allowing plunge cuts into a surface.

Aluminum-titanium-nitride (AlTiN) coated end mills get additional wear and temperature resistance from their finish.