Spring Collet Precision Collet Chuck Set ER8 ER16 ER20 ER25 ER32 ER40 For CNC. ER20 Spring Collet For CNC Engraving Machine Milling Tool Holder 1-13mm 13PCS. 1PC 3Flutes Countersink Drill Bits 20.5/25/30mm 90 Degree HSS Chamfering Cutter.
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