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Average Customer Review
 5.0 (2 customer reviews)
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November 12, 2008
Smooth ink flow. Color...
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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.

1 person found this helpful
tyleraspect
 
February 11, 2011
These are great refills....
Verified Purchase
These are great refills. Smooth, solid, and skip-free. They work in the Zebra dirfit jell pens too.

brett.jianshi