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ER-AZ Collet Nuts

ER-AZ Collet nuts are commonly found on short chucks and live tooling heads. These collet nuts have an external thread. For the proper spanner wrenches please check under E-AZ wrenches. For safer operation consider upgrading to the Zeta Collet Nut System! Check the Zeta Collet Nut System in our store. Any questions please drop us a line.