Replaceable head drill body HYDRA with DIN 6535HE NC whistle notch shank, size 17.0mm with an overall length of 136.5mm and flute length of 62.5mm according to DORMER standard for 3xD drilling with HYDRA P (R950), HYDRA M (R960) or HYDRA K (R970) diameter 16.6 up to 17.5mm
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