FeaturesOil-based inkWater-resistant finishMedium 1mm tipTransparent hexagonal barrelPack of 12This pack of Pilot Medium Ballpoint 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.