The Army Painter Miniature and Model Drill;

AMYTL5001 Miniature and Model Drill Set by The Army Painter

The Pin Vice is also a well known and valuable tool for the converter and modeler. It is used to drill holes in metal and plastic miniatures (gun barrels, bullet-holes etc.) but mostly used for pinning larger pieces together by drilling holes in both parts and then connecting them with a little piece of wire (use a paper clip). Comes with 5 different sized drills inside the handle.