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1. T.I.R. ≤ 0.00031" at collet face
2. Rear thread for pull stud is 5/8" - 11
3. Balanced to G6.3 at 8000 rpm
4. Works on all CAT40 machines
3. All critical tool holder surfaces precision ground
4. Made from alloy structural steel hardened to HRC48 - 52 for long, durable service life
5. Balanced to G6.3 at 8000 rpm
6. Taper ground to high precision AT3 accuracy
7. Collet nut is included
8. Through-spindle coolant capability
9. Collet Chuck accepts all ER20 collets
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