The Same Jug x3

3 jugs sitting on the table. 
3 balls of clay. 
The same clay, the same colour, 
the same weight. 
Each ball the same; kneaded and
smoothed and kneaded some more. 
All 3 were the same. 
You start with a ball spinning on the
wheel and with only some water and
your hands and your imagination they
become jugs. 

A set of jugs all the same. 
But they aren't the same. 
You can see that. 
They are the same ball of clay, but now?
Now they are different sizes. 
Or are they? 

- The Same Jug x3