Replaceable head drill body HYDRA with DIN 6535HE NC whistle notch shank, size 31/32" with an overall length of 220.2mm and flute length of 135.2mm according to DORMER standard for 5xD drilling with HYDRA P (R950), HYDRA M (R960) or HYDRA K (R970) diameter 0.9375 (15/16) up to 0.9688" (31/32)
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