Replaceable head drill body HYDRA with DIN 6535HE NC whistle notch shank, size 59/64" with an overall length of 210.5mm and flute length of 129.5mm according to DORMER standard for 5xD drilling with HYDRA P (R950), HYDRA M (R960) or HYDRA K (R970) diameter 0.9055 up to 0.9252"
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