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- Holds all ER11 collets
- This M style nut is the slimmer type
- Made from alloy steel hardened to 54 - 56rc
- Precision ground ID thread and taper
- Has an id thread of 13mm X .75 pitch
- Outside diameter is .630 inches (16mm)
- Outside has castle notches for tightening
- ER11M-Wrench works on this collet nut
- Internal cam removes collet when unscrewed
- MariTool Part# is ER11-MNUT
