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- Collet Chuck accepts all ER11 collets
- Works on all CAT 40 machines
- 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 3.5 inches
- Collet nut is included
- Coolant thru capability
- Concentricity is less than .0001 at collet face
- Rear thread for pull stud is 5/8—11
- MariTool Part# is CAT40-ER11-3.5T