This pack of 12 Pilot Medium BPS-GP Ball Point Pens is perfect for smooth, reliable writing at work, school or home. Packed with oil-based black ink that flows smoothly and dries to a water-resistant finish, helping to prevent smearing and smudging. A medium 1mm tip makes for a bold line that's suitable for most writing tasks. The sturdy hexagonal barrel is transparent, so you can easily view the remaining ink level, and it's topped with a strong metal cone.