The diameter of a ball: 1.0 mm. Bold letter type.
Comes in a barrel design with rubber grip.
The gel ink ball-point which can be drawn smoothly.
Ultra smooth ink flow with a bold tip.
Pigmented ink with water resistance / lightfastness / preservability.
Intensely-coloured waterproof and fadeproof ink from its 1.0mm ball.
Refillable with UMR-10 refills.