Each nail is NOT exactly the same size as the others. I have done this so that there is as little distortion as possible. Each nail is centered, however, so most if not all designs should repeat wonderfully. Also, the nails are mirrored so that each design is flipped on the left hand. This means that is you have a design that is not symmetrical, it is mirrored on the other hand instead of all of the nails pointing the exact same way.