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- This holder accepts all 4mm (.1575 inch) shank tooling
- All critical surfaces precision ground
- Made from hardened alloy steel
- Balanced to G2.5 at 20,000 rpms
- Coolant thru capable
- Gage length is 50mm (2.0 inches)
- Concentricity is less than .0001
- Rear thread for pull stud is 5/8-11
- MariTool Part# is CAT40-EM4-50