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- This tool holder accepts all .500 shank tooling
- Works on all BT40 machines with Dual Contact spindles
- Compatible with BIG-PLUS® spindles
- 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 3.00 inches
- Concentricity is less than .0001
- Rear thread for pull stud is M16 X 2.0
- MariTool Part# is BT40-EM.500-3.0D
*BIG-PLUS® is a trademark of Daishowa Seiki Kabushiki Kaisha; Big Daishowa Seiki Co., Ltd., Corp.
Compatible with BIG-PLUS® spindles, but not licensed.