Manufacturer Part Number: JCM6309|Minimum Drill Chuck Capacity (mm)|20.32Minimum Drill Chuck Capacity (Inch)|Minimum Drill Chuck Capacity (Decimal Inch)|0.1800Maximum Drill Chuck Capacity (mm)|20.32Maximum Drill Chuck Capacity (Inch)|Maximum Drill Chuck Capacity (Decimal Inch)|0.8000Mount Type|TaperedMounting Size|JT3Key Type|KeyedBearing Type|PlainChuck Material|SteelJaw Material|Closed Length (Inch)|Closed Length (mm)|103.12Closed Length (Decimal Inch)|4.0600Open Length (Decimal Inch)|3.1400Open Length (mm)|79.76Open Length (Inch)|Shank Type|Shank Diameter (Inch)|Sleeve Diameter (mm)|64.52Sleeve Diameter (Inch)|Sleeve Diameter (Decimal Inch)|2.5400TIR (Decimal Inch)|0.004000Key Number|K4Includes|Maximum RPM|Modular Connection Size|Additional Information|Coolant Style|PSN|Machine Part Compatibility|Product Service Code|UNSPSC Code|27112800