Micro 100 VLR-375-4 4 Flute Variable Helix Long Length Reduced Neck High Velocity with Corner Radius End Mill, 3/8" Cutter Diameter, 3/8" Shank Diameter, 4" Overall Length, 3/4" Flute Length, 2.750" Reduced Neck Length, 0.020 Tool Radius, Solid Carbide Tool