Replaceable head drill body HYDRA with DIN 6535HE NC whistle notch shank, size 30.0mm with an overall length of 185mm and flute length of 104mm according to DORMER standard for 3xD drilling with HYDRA P (R950), HYDRA M (R960) or HYDRA K (R970) diameter 30 up to 30.5mm
For additional details please check the Manufacturer's site: