On 2017-07-21, Ignoramus2777 wrote:

I have a small sensitive chuck like that. I am sure that I would sell
those drills, but I wanted to keep at least a couple dozen of them,
and I am not sure which ones to pick.

Look at the tips with magnification. The ones you want for
drills are ground as split point drills. Some are end-mill grind, and
are likely used for weird-shaped apertures.

Enjoy,
DoN.

--
Remove oil spill source from e-mail
Email: | (KV4PH) Voice (all times): (703) 938-4564
(too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html
--- Black Holes are where God is dividing by zero ---