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- Collet Chuck accepts all ER11 collets
- Works on all CAT40 machines with Dual Contact spindles
- Compatible with BIG-PLUS® spindles
- Not threaded for internal stop screw
- All critical tool holder surfaces precision ground
- Made from alloy steel hardened to 54 - 56rc
- Tool Holder is Balanced to G2.5 at 20,000 rpms
- Gage length is 2.5 inches
- Concentricity is less than .0001 at collet face
- Collet nut is included
- Coolant through capability
- Rear thread for pull stud is 5/8—11
- MariTool Part# is CAT40-ER11-2.5D
*BIG-PLUS® is a trademark of Daishowa Seiki Kabushiki Kaisha; Big Daishowa Seiki Co., Ltd., Corp.
Compatible with BIG-PLUS® spindles, but not licensed.