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- Works on all BT40 machines with Dual Contact spindles
- Compatible with BIG-PLUS® spindles
- Arbor diameter is 1.25 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
- Nose diameter is 2.43 inches
- Tool holder is coolant thru (coolant thru arbor screw not supplied). Read more here Shell Mill Holder FAQ
- Lock screw thread is 5/8-18
- Width of removable drive keys are .490 inches
- Rear thread for pull stud is M16 X 2.0
- MariTool Part# is BT40-FMA1.25-2.0D
*BIG-PLUS® is a trademark of Daishowa Seiki Kabushiki Kaisha; Big Daishowa Seiki Co., Ltd., Corp.
Compatible with BIG-PLUS® spindles, but not licensed.