Bic Cristal Medium BallPen Black, the best-selling ballpoint pens that just about everyone has used because they have been around for many years and work so well. These low cost, lightweight pens with clear hexagonal barrel are actually designed to help you write comfortably with more control. The 0.4mm ink line is consistent, without leaving ‘skips’ or ink blobs and Bic states that there is a minimum writing length of 2km per pen! The high quality ball is made especially durable because it is constructed from tungsten carbide. Key features: Black ink Skip and blob resistant High quality Lightweight