Medium size is between 100mm and 55mm, Small is less than 50mm
Small sizes - 32mm, 40mm, 45mm, 50mm & 55mm.
Various standard sizes - 23mm, 25mm, 28mm, 30mm, 33mm, 40mm, 45mm, 50mm & 55mm
Small sizes less than 50mm. Medium sizes more than 55mm
Some of the shapes already made on display. New shape is approx $100