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- This tool holder accepts all .250 shank tooling
- All critical tool holder surfaces precision ground
- Made from alloy steel hardened to 54 - 56rc
- Balanced to G2.5 at 20,000 rpms
- Gage length is 2.5 inches
- Concentricity is less than .0001
- Rear thread for pull stud is M16 X 2.0
- MariTool Part# is BT40-EM.250-2.5