MaxxMacro® (D/C) & Maxx-ER ER40 Collet Replacement Locking NutMaxxMacro 54 ER40 Collet Chuck Locking Nut replacement nut for MaxxMacro Collet Chuck, ensuring secure and accurate operation. This nut works on all MaxxMacro, Maxx ER ER40 Collet chucks.
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