Change colours without changing pens with BIC 4 Colours Retractable Ballpoint Pen all in one, so this box of 12 will keep you going for a while! Perfect for colour coding your work and create your own bullet journal.\r\nEach of the 4 medium 1.0 mm ballpoints provides an average of 2 km of crisp precision writing. The classic design features a round barrel and a clip for attaching it to notebooks. BIC is simplicity itself.