Cutting Diameter (Decimal Inch): 0.1250Cutting Diameter (mm): 3.18Overall Length (Decimal Inch): 1.5000Overall Length (mm): 38.1Letter Height (Decimal Inch): 0.2188Letter Height (mm): 5.56Line Width (Decimal Inch): 0.0250Line Width (mm): 0.64Number of Flutes: 1Shank Type: Straight / Cylindrical Material: Sub Micron Grain CarbideFinish / Coating: UncoatedSeries: HRPrimary Workpiece Material: Steel ~30HRC, Steel 30~40HRCSecondary Workpiece Material: Hardened Steel ~55HRC, Hardened Steel ~68HRC, Stainless Steel, Aluminum, Graphite, Copper Alloy, CFRP, Nickel / Cobalt, Titanium AlloyApplication: General Purpose EngravingUnit of Measure: inch