GiGiS G-Optimus Ball Pen contains 12 pens, each with a 0.7 mm tip size that offers bold, steady lines perfect for daily writing tasks. Filled with black ink, these ballpoint pens ensure smooth and effortless writing, ideal for school, office or home use. The sturdy construction and comfortable grip provide a reliable writing experience, making them a great choice for bulk use in classrooms, workplaces or personal use.