Manufacturer Part Number: NBK-6|Chuck Diameter (mm)|6inChuck Diameter (Inch)|6; 6inChuck Diameter (Decimal Inch)|Minimum External Chucking Diameter|0.28inMaximum External Chucking Diameter|2.75inMinimum Internal Chucking Diameter|1.9inMaximum Internal Chucking Diameter|5.5inBase Width|8.67inBase Diameter|8.67inGripping Force (Lb.)|Gripping Force (kg)|Minimum External Chucking Diameter (Decimal Inch)|0.2800Minimum External Chucking Diameter (mm)|Maximum External Chucking Diameter (mm)|Maximum External Chucking Diameter (Decimal Inch)|2.7500Minimum Internal Chucking Diameter (mm)|Minimum Internal Chucking Diameter (Decimal Inch)|1.9000Maximum Internal Chucking Diameter (mm)|Maximum Internal Chucking Diameter (Decimal Inch)|5.5000Through Hole Size (Decimal Inch)|1.7600; 1.76inJaw Stroke (mm)|Jaw Stroke (Decimal Inch)|Repeatability (mm)|Repeatability (Decimal Inch)|Base Width/Diameter (mm)|Base Width/Diameter (Decimal Inch)|8.6700Overall Height (mm)|2.43inOverall Height (Decimal Inch)|2.43in; 2.4300PSC Code|UNSPSC Code|27112100Bolt Hole Spacing (mm)|Bolt Hole Spacing (Decimal Inch)|Base Length (mm)|