Manufacturer Part Number: 557u 0|Taper Pin Size|#0Small End Diameter (Decimal Inch)|0.1287Flute Type|SpiralShank Type|SquareOverall Length (mm)|Overall Length (Decimal Inch)|2.9375Overall Length (Inch)|2-15/16Coating/Finish|Bright/UncoatedFlute Length (mm)|Flute Length (Inch)|1-11/16Flute Length (Decimal Inch)|1.6875Large End Diameter (Decimal Inch)|0.1638Shank Diameter (Decimal Inch)|0.1719Shank Diameter (mm)|Shank Diameter (Inch)|11/64Shank Diameter|11/64Spiral Direction|Left HandTool Material|High Speed SteelSeries|557UTool Application|Hole Enlarging; Hole Finishing; Hole ShapingTool Performance|General PurposeCutting Direction|Right HandPrimary Workpiece Material|Primary Workpiece Material Code|Secondary Workpiece Material|Secondary Workpiece Material Code|Taper Rate|1:48Number Of Flutes|Product Service Code|UNSPSC Code|