4 Flutes BallNose with Rainbow Coating

A 4-flute ball nose end mill with a rainbow (DLC or nano-composite) coating is a high-performance, tungsten steel carbide cutting tool designed for 3D contouring, pocketing, and finishing. The four flutes allow faster feed rates and better surface finishes, while the rainbow coating reduces friction, heat, and adhesion, making it ideal for hardened steels, stainless steel, and cast iron.