Bic Cristal Fun Ballpoint Pen 1.6mm Tip 0.42mm Line Purple (Pack 20) BIC Cristal Fun is a large-point ballpoint pen in a range of exciting colours, making your school work much more stylish! Available in purple, they make it easier than ever to organise your workload and bring some personality to the page. With cap and end plugs that match the ink itself, it's quick and easy to find the colour you need! A smoked barrel also allows you to see when the ink level is running low.