Don't be round when you can be SQUARE!
These are the smallest square cutters available for polymer clay.
And you would be surprised by some of the other uses even biologists have found! One of the best sellers for a reason. When the typical round hole won't do. I have used them not just for making holes, but for embellishment patterns on the surface of clays. They give an interesting design to mokume gane too! Because they cut so cleanly, there is little to refine if you use a cut and wiggle technique.
See them Here