[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): 0.450[L3] Reach Length (mm): 11.43Length Type: Extended Reach, StubNeck Diameter (Decimal Inch): 0.0518Neck Diameter (mm): 1.32Neck Length (Decimal Inch): 0.450Neck Length (mm): 11.43Helix 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: UncoatedSeries: 1742Primary Workpiece Material: BrassSecondary Workpiece Material: Aluminum, Graphite, Copper Alloy, CFRP, Plastic, Thermoset Plastic, High Density Plastic, Titanium AlloyApplication: Roughing / FinishingUnit of Measure: inch