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ER20M x M12 Modular Collet Chuck
- Fits all ER20 collets
- Collet Nut Thread: M24 x 1.0; Use with ER20M Collet Nuts
- Arbor Thread: M12 x 1.75
- Alloy Steel with Black Oxide Coating
- Includes ER20M Collet Nut (PN 37105) and ER20M Collet Wrench (PN 37108)