Cutting Diameter (Size): 1/4"Cutting Diameter (Decimal Inch): 0.2500Cutting Diameter (mm): 6.35Shank Diameter (Decimal Inch): 0.2500Shank Diameter (mm): 6.35Overall Length (Decimal Inch)3.0000Overall Length (mm)76.20Length of Cut (Decimal Inch): 1.0000Length of Cut (mm): 25.40Flute Style: Up Cut / Diamond PatternEnd Style: Drill PointShank Type: Straight / CylindricalMaterial: Sub Micron Grain CarbideFinish / Coating: UncoatedSeries: 2120BWCopper Alloy, Brass, CFRPApplicable Workpiece Material: Aluminum, Plastic, Thermoset Plastic, High Density PlasticApplication: Routing CFRP, Fiberglass, and Composite MaterialsUnit (inch/mm): inch