Replaceable head drill body HYDRA with DIN 6535HE NC whistle notch shank, size 12.5mm with an overall length of 130mm and flute length of 69mm according to DORMER standard for 5xD drilling with HYDRA P (R950), HYDRA M (R960) or HYDRA K (R970) diameter 12.5 up to 12.9mm
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