Mill Diameter Inch 132 Number of Flutes 2 Material Cobalt Length of Cut Inch 364 Shank Diameter Inch 316 FinishCoating Bright Single or Double End Double Center Cutting Yes Overall Length Inch 2 Flute Direction Right Cutting Direction Right Variable Helix No Helix Angle 30 Tools under Miniature End Mills have 316 shank diameter without flats Designed with positive rake angle geometry and a high helix angle to ensure free cutting action Flute design provides good strength behind the cutting edge Suitable for finishing of precision components such as watch, camera and electronic apparatus molds