Ballpoint

: When not in use, the ball acts as a perfect cap to keep the internal ink from drying out. Top 5 Pens - The Pen Addict

: A tiny, micro-textured sphere (usually tungsten carbide or steel) sits in a socket at the tip. ballpoint

The genius of the ballpoint pen lies in its extreme simplicity. : When not in use, the ball acts

: As you move the pen, the ball rolls, collecting a thick, oil-based paste from the reservoir and transferring it to the paper. : When not in use