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- Arbor diameter is 1.000 inches
- Made from alloy steel hardened to 54 - 56rc
- Concentricity is less than .0002 at face and arbor
- All critical surfaces precision ground
- Gage length is 2.0 inches
- Lock screw thread is 1/2-20
- Width of removable drive keys are .370 inches
- Rear thread for pull stud is M16 X 2.0
- MariTool Part# is BT40-FMA1.0-2.0