Cristal Ballpoint Pens feature a clear barrel so you can see the available ink supply and a roll-proof, hexagon-shaped barrel for comfortable, controlled writing. Design includes a ventilated cap and brass medium point with tungsten carbide ball. Cap color matches ink color. Stick pen delivers long-lasting dependability and smooth writing and writes with consistent, sharp, effortless lines. Ballpoint pens are nonrefillable. * Up to 35% smoother than BIC's traditional ballpoint ink * Classic ball pens offer long-lasting dependability and smooth writing * Pens feature Easy-Glide System® ink for ultra-smooth Writing * Iconic hexagon-shaped barrel * Stick pens feature clear barrel for visible ink supply * Available in 1.0 mm medium point in black, blue, and red ink for everyday writing activities