[OD] Cutting Diameter (Size): 0.0550"[OD] Cutting Diameter (Decimal Inch): 0.0550[OD] Cutting Diameter (mm): 1.40[Od] Shank Diameter (Decimal Inch): 0.1250[Od] Shank Diameter (mm): 3.18[L1] Overall Length (Decimal Inch): 2.500[L1] Overall Length (mm): 63.50[L2] Length of Cut (Decimal Inch): 0.082[L2] Length of Cut (mm): 2.08[L3] Reach Length (Decimal Inch): 0.275[L3] Reach Length (mm): 6.99Length Type: Extended ReachNeck Diameter (Decimal Inch): 0.0515Neck Diameter (mm): 1.31Neck Length (Decimal Inch): 0.275Neck Length (mm): 6.99Helix Angle (Degree): 30Number of Flutes: 3Flute Style: Right Hand Spiral / Medium HelixType: Micro with Neck Relief, Center CuttingHand of Cut: Right-HandShank Type: Straight / CylindricalMaterial: Sub Micron Grain CarbideFinish / Coating: AlTiNSeries: 1740Primary Workpiece Material: Steel ~30HRC, Steel 30~40HRC, Hardened Steel ~55HRCSecondary Workpiece Material: Hardened Steel ~68HRC, Stainless Steel, Cast Iron, Nickel / Cobalt, Titanium AlloyApplication: Roughing / FinishingUnit of Measure: inch