Pen End: A batter, Pen Top: The outside architecture of a baseball stadium with a baseball infield inside the baseball stadium top, Pen Clip: Is a baseball bat, Pen Mechanism: The "Curveball" Bolt Action mechanism replicates the arc of a pitcher's curveball approaching the batter and works to smoothly advance and retract the refill, Pen Tip: Incorporates a baseball and some of the stadium architecture