Un bolígrafo es un bolígrafo que despliega el medio de escritura a través de una bola en la parte delantera del bolígrafo o recarga.
A ballpoint pen is a pen that uses tiny spinning balls, made of brass, steel, or tungsten carbide, that release ink onto the paper as you write. The ballpoint pen is very different from its predecessors—reed pens, quills, metal-tipped pens, and fountain pens.
