- Uni-ball eye "ultra micro" the first roller ball in the world to have a size of 0.38mm with bullet type tip
- In order for the ball inside the tip to work and write properly
- The ink of uni-ball eye “ultra micro” had to be re-designed and adjusted for extra fine writting.
- Uni-ball eye "ultra micro" is able to write approximately 1800m
- And the newly developed tip ball inside the tip resists more than over 1.5 million times rotations.
- Nib Type : Rollerball
- Nib Size : 0.38 mm
- Pen Features : Capped
- Ink Type : Liquid
- Nib Material : tungsten carbide
