1 out of 1 people found the following review helpful
Smooth ink flow. Color...
, November 12, 2008
Smooth ink flow. Color of ink is identical to the color of grip on the UMN-138
RT blue-black pen. This refill is usable in the UMN-138 pen as well.
0 out of 1 people found the following review helpful
These are great refills....
, February 11, 2011
These are great refills. Smooth, solid, and skip-free. They work in the Zebra
dirfit jell pens too.