Manufacturer Part Number: GRT-5-4|Drill Bit Size (Inch)|5/16Drill Bit Size (mm)|Drill Bit Size (Decimal Inch)|0.3125Shank Type|StraightDrill Bit Material|Carbide Tipped; High Speed SteelShank Diameter (Inch)|1/4Shank Diameter (Decimal Inch)|Shank Diameter (mm)|Flute Length (mm)|Flute Length (Inch)|2-1/2Flute Length (Decimal Inch)|2.5000Overall Length (mm)|Overall Length (Inch)|4Series|GRTTool Application|Tool Performance|Multi-PurposeDrill Bit Cutting Shape|Primary Workpiece Material|Granite; Hard Metal; Marble; Tile; WoodIncludes|Standards|Number Of Flutes|Coating/Finish|Number Of Pieces|1Number Of Flats|UNSPSC Code|