This medium 1 00mm tip 4 colours ballpoint pen both refillable and retractable is the perfect all rounder sold as a box of 12 this pens wide round blue barrel is easy to grip for comfortable writing adding precision to your office work unique manufacturing process of the point gives you a reliable smooth ink flow helping you concentrate on your work colour code and organise your important office files and documents in red blue black or green keeping you on track a resistant robust