Numbered and Color Coded finger Bits

If you meant to include photos of what you're talking about, they do not appear to have been uploaded successfully.

Harbor Freight Tools sells them.   Industrial Carbide Micro Bits 1/8 shank size so they will fit in a standard Dremel collet.   There are two types; drill and grinder burr.   I use the latter to resize and refine holes.    They are carbide so they stay sharp, but the smaller diameter sized ones can and do break even under finger pressure

EdGrune

Harbor Freight Tools sells them.   Industrial Carbide Micro Bits 1/8 shank size so they will fit in a standard Dremel collet.   There are two types; drill and grinder burr.   I use the latter to resize and refine holes.    They are carbide so they stay sharp, but the smaller diameter sized ones can and do break even under finger pressure 

Ah, OK, thanks, Ed!  Yeah, I've got a smaller set, all grinding bits.  I've found them useful when modifying metal figures.

The contents of the packages vary as to what is coming off the product line at the time.  Trying to check the contents through the translucent packaging can be problematic.  Out of multiple purchases I have cobbled together sets of drills and burrs.

And BTW, there is a hand-held 1/8" collet handle available into which the shank fits.  Makes it a bit more robust and easier to turn than just twirling the bit between the fingers, with the inherent rocking motion which may be imparted.  I've snapped many bits this way, especially thru tougher materials

What are the bit diameters?

Varies per package.   You pays your money and you takes yer chance. 

I've found #80 up to 5.45mm

Hi Baron;

 Sorry no photos!