No talking piece is the same.  Each has been made from an existing circle as it was designed for use in a firearm.  Each has been reformed by changing its orientation.   From one perspective it can be seen as a circle.  From another perspective it can be seen as an oval, or a widened circle. It’s designed to be tactile as you hold it, using your thumb and fingers to push at its edges as if they are widening the circle as it’s being used for mediation or meditation.  An option to use with the Loaded Conversation Dialogue Guide