Product Details: Manufacturer Part Number: 44491|Drill Bit Size (Inch)|Drill Bit Size (Wire)|#21Drill Bit Size (Letter)|Drill Bit Size (mm)|Drill Bit Size (Decimal Inch)|0.1590Drill Bit Material|High Speed SteelDrill Point Angle (Degrees)|118Coating/Finish|Flute Type|SpiralCutting Direction|Left HandPoint Type|StandardPrimary Workpiece Material|Cast Iron; SteelSpecification Number|Coolant Through|NoNumber of Flutes|2Drill Bit Finish/Coating|Bright/UncoatedFlute Length (Inch)|2-5/16Primary Workpiece Material Code|Shank Diameter (Decimal Inch)|0.1590Overall Length (mm)|Overall Length (Inch)|3-1/2Overall Length (Decimal Inch)|Spiral Type|RegularFlute Length (mm)|Flute Length (Decimal Inch)|Series|150LTool Application|Flute By Diameter Ratio|Shank Diameter (Inch)|Shank Diameter (mm)|Maximum Drilling Depth (Decimal Inch)|Maximum Drilling Depth (mm)|Maximum Drilling Depth (Inch)|Shank Length (mm)|28.57Shank Length (Decimal Inch)|1.1250Shank Length (Inch)|Number of Flats|Drill Point Length (mm)|Drill Point Length (Decimal Inch)|Drill Bit Diameter Tolerance|-0.0007 to 0.0000 inWeb Thinning|Web-ThinnedWeb Configuration|TaperedShank Type|Straight-CylindricalTool Performance|General PurposeStandards|Double Margin|Drill Bit Grade|General PurposeDrill Bit Size Range (Decimal Inch)|0.1500 - 0.2000Drill Bit Size Range (mm)|Material Grade|Specification Designation|Product Service Code|UNSPSC Code|23241634