FeaturesBic Cristal medium ballpen writes on any type of paper for up to 2kmRoll proof hexagonal barrel provides comfortable writingWith ventilated cap for safetyBrass point with tungsten carbide ball AssortedThese Bic Cristal Ballpoint Pen Medium (Pack of 10) feature a durable tungsten carbide ball mechanism and smooth oil-based ink for reliable, everyday use. The medium 1.0mm tip produces a thin 0.4mm line for elegant handwriting and detailed sketching. The hexagonal barrel includes a cap and end plug that matches the ink for easy identification. This assorted pack contains 10 pens with 4 blue and 2 each of black, green and red.