Kodiak Cutting Tools KCT131558 USA Made Solid Premium Carbide End Mill, ALTiN Coated, 4 Flute, 1/4" Diameter Premium Sub-Micrograin Carbide End Mill Made In the USA 1/4" Shank Diameter 1/2" Flute Length (Length of Cut), 30 Degree Helix 2" Overall Length Center Cutting Carbide Endmill 4 Flutes, ALTiN Coated, Single End