A rollerball permanent pen with a very fine tip of 0.1mm by Ohto.
Equipped with a metal rollerball nib, the pen produces a consistent fine line as with its fiber-tip counterparts, but are more long-lasting and durable. Comes with waterproof archival-safe black pigment ink. Available in various tip sizes.
Dimension: (Ø)0.4" x (H)5.4"