From the picture the top of the drill bit looks slightly wider to the rest, are they?
Hi amii. Good question, in short, the answer is Yes - but we are talking a matter of a tiny fraction of a millimeter. The "tip" or "knuckle" of the Drill bit measures precisely at the stated measurement of the drill bit, whether it be 5.5, 6, 7 or 8mm respectively. The flute of the drill bit measures at just under this measurement in order for the waste created to be free to be evacuated from the hole with ease. Thank you for your question, I hope this helps.
Answered by: Bosch Product Expert
Date published: 2019-11-25