3pcs ER20 1/2" 1/4" 1/8" High Precision Spring Collet Set for CNC Workholding...

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ER20 Collet Nut Set 1 8 1 4 1 2 Inch Clamping Nuts High Precision Spring Steel

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Spring Collets CNC Lathe Milling Chuck -ER11 High Precision 1/8 Inch and 1/4 ...