BIC Cristal Blue Pens 50 PackBIC Cristal Blue Pens 50 Pack Efficient design that's simple and trusted. Includes a clear barrel for checking your ink level The super durable BIC Cristal Original pen has enough blue ink to write for an average of 3 km Made with minimal materials and proudly certified by the NF Environnement eco label The classic BIC Cristal Original pen is the world's best selling ballpoint pen and this box of 50 contains all blue Biro pens The medium 1. 0 mm point