Uncoated 4-Flute Double End Mill Solid carbide provides better rigidity than high speed steel. It is extremely heat resistant and used for high speed applications on cast iron, nonferrous materials, plastics and other tough-to-machine materials. Uncoated tools do not feature supportive treatments on the cutting edge. They are are used at reduced speeds for general applications on nonferrous metals. Center Cutting tools have one or more cutting edges at the tip and are used in a variety of applications including plunging, drilling or ramping. Features include... 3/8" Mill Diameter 3/4" Length of Cut 3/8" Shank Diameter 3-1/2" Overall Length 4 Flutes 30° Helix