Manufacturer Part Number: A63.142.1/4Z.4|Shank Type|TaperShank Diameter (Decimal Inch)|Shank Diameter (mm)|Shank Diameter (Inch)|Modular Connection Size|Taper Size|HSK63AOverall Length (mm)|160.02Overall Length (Decimal Inch)|6.3000Hole Diameter|0.2500Hole Diameter (Mm) ( - 0 Decimals)|6.35Hole Diameter (Inch)|1/4Projection (Decimal Inch)|6.3000Projection (mm)|160.02Through Coolant|YesClamping Depth (Decimal Inch)|1.4200Clamping Depth (mm)|36.07Nose Diameter (Mm) ( - 2 Decimals)|21.08Nose Diameter (Decimal Inch - 4 Decimals)|0.8300TIR (Decimal Inch)|TIR (mm)|Includes|Series|Additional Information|With Cool Jet & Resealable BoresCutting Direction|Coating/Finish|Balanced To Rpm|25000Extended Reach|Product Service Code|UNSPSC Code|27112809