btnx ER11ER16ER20ER25 ERspringcolletER11-1 ER16-9ER25-16forCNCmillingtoolholderEngravingmachinespindlemotor 3M8Q4

Name: engraving machine high elastic Er spring Collet Feature: High quality spring steel. Large clamping force and high precision. For boring, milling, tapping, grinding, carving and other processing.

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