Tool-Flo 1271005 Helical Flute Thread Mills; Material: Carbide ; Thread Size (mm): M10x1.5 - M12x1.5 ; Thread Type: Internal ; Shank Diameter (Decimal Inch): 0.3120 ; Cutting Diameter (Decimal Inch): 0.2760 ; Length Of Cut (Decimal Inch - 4 Decimals)