I used these tiny bits to make pinhole camera foils. The smallest I have is #80 wire gauge, 0.013 inches or 0.34mm, but they come even smaller than that. I dropped one of these and search forever until I finally found it hanging from a strand of spider web half way to the floor.
Location: Box 8
Have you used this tool? Think my description is all wrong? Have a better example? Comment now with any thoughts you have about this tool!