Smallest dill bits I've ever seen.

[OccupantRJ]

For the uninitiated, some small drills are not twist drills but are of the spade drill type.

 

[M6erfan]

Now you need a pin vise to hold them in a chuck or just drill by hand. I use them for cleaning carb jets mainly but there are always a few times a year I use them for some other odd thing. Nice to have when you need one. Be careful, they break easily.

+1, I use them for clearing out tiny passages on 4-5 decade old carburetors too