The Uniball Jetstream Rollerball Ink refill suits Uniball NON-RETRACTABLE Jet Stream Pens and is available here in black ink.
It has a 1mm tip and writes a 0.45mm vivid bold line. The ink is quick drying and makes for a great high volume everyday writer.
TIP: Stainless Steel, 1mm. 0.45mm line.
SUITS: SX-210. Non-retractable Jetstream Pens.
SOURCE: Made in Japan