precision 0.002 BT ER BT30 BT40 knife shank ER16 ER20 ER25 ER32 70 100L knife shank for CNC machining center spindle tool holder

precision 0.002 BT ER BT30 BT40 knife shank ER16 ER20 ER25 ER32 70 100L knife shank for CNC machining center spindle tool holder

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