This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Tiefbohren auf Bearbeitungszentrum. en deep hole drilling gundrilling with solid carbide twist drill on vertical machining center application shown here is machining test with moment and thrust measurements using rotation dynamometer tool holder with wireless data transfer Diameter mm hole depth mm de Tiefbohren mit berlangem Spiralbohrer