31/64 inch
Dormer Replaceable head drill body HYDRA with ISO 9766 shank with flange and flat, size 1.1/64" with an overall length of 124.7mm and flute length of 49.7mm according to DORMER standard for 1.5xD drilling with HYDRA P (R950), HYDRA M (R960) or HYDRA K (R970) diameter 0.9843 up to 1.0156" (1.1/64)
Note: Image is for illustrative purposes only and may differ from the actual product