Manufacturer Part Number: 438T-0408|Diameter (mm)|Diameter (Inch, Fraction)|4-1/4Diameter (Letter)|Diameter (Decimal Inch)|Series Code/Seat Size|8Point Angle|144Insert Material|High Speed SteelManufacturer Grade|Spade Drill Insert Diameter Range (mm)|Drill Diameter Range (Decimal Inch)|Series|GEN2 T-APrimary Workpiece Material|Steel; Cast Iron; Non-Ferrous MetalPrimary Workpiece Material Code|P; K; NSecondary Workpiece Material|Secondary Workpiece Material Code|Standards|Height (Inch)|Material Grade|M4Coating Classification|PVDCoating/Finish|TiNThickness (mm)|Height (Decimal Inch)|Thickness (Decimal Inch - 4 Decimals)|0.4375System Of Measurement|Product Service Code|UNSPSC Code|