- The classic retractable ball pen that lets you write in 4 different colours - This iconic product lets you colour code your work in black, blue, red or green ink - Designed for all ages and generations, this long-lasting pen writes up to a combined average length of 8000m - Refillable and retractable, meaning a durable, practical pen - Get great value and buy a pack of 2 pens and get a third free