How to pronounce “drill bit” in English

is that at the bottom of the of the drill bit when you go down there you're trapping materials in there but as you

and put it back into it to keep extending the length of the drill bit.

Or hard material, which can also be a worn out drill bit or something else that is causing your rate of penetration to go to zero.

OK, then the one in the center we actually sprayed the tracer on the drill bit itself in a different hole before it went down below the surface.

previous one showed it so if you go back and watch this you can see it the upper part of the drill bit has a flute that

And there's such good error-correction to Blu-ray discs, you can get a drill bit, which is about three or four millimeters across-- so that's