Harvey Tool 70010-C8 | 2-56 Thread 0.0650" Cutting Diameter 3FL TiB2 Coated Carbide Helical Flute Thread MillFeatures AlTiN coating works great in steels up to 60Rc TiB2 coating is outstanding in aluminum Cuts internal and external 60 Degree UN threads Mills right hand and left hand threads Able to cut larger threads of the same pitch Helical flutes Solid carbide CNC ground in the USA Product Specifications Size 2 56 Milling Diameter (Decimal Inch) 0. 0650" Shank Diameter (Decimal Inch) 0. 1250" Shank Diameter (Inch) 1 8" Number of Flutes 3 Length of Cut