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ER-32 Collet Chuck, 4" Diameter - Allows 25/32" Stock Through The Headstock of The Lathe, Concentricity .0016", LittleMachineShop.com (4231): Amazon.com: Tools & Home Improvement
uxcell ER32 12mm Spring Collet Chuck for CNC Engraving Machine Lathe Milling Tool - - Amazon.com
HHIP 3900-5099 5C ER-32 Spring Collet Chuck : Amazon.ca: Tools & Home Improvement