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I just shared this post a few minutes ago. The Uniball pen set is a 0.7mm fine-line black pen. This is part of the rollerball vision collection.
This two-pack can be found at Uniball, Walmart, or Micheal’s. Prices range from $2.75 USD (each pen) up to $7 USD a two-pack.
Uniball product link
Michael’s
https://www.michaels.com/uni-ball-vision-rollerball-2-black-0.7mm-pen-set/D304784S.html?r=g
Walmart
I also found a few other Unibal products that might interest you.
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