Is the ink acid free ?

I don't know if they are acid free or not - these pens are though and maybe they will work for you? : uni-ball Vision Elite Stick Bold Point Roller Ball Pens, 4 Blue-Black Ink Pens(67182PP) Also sold by Amazon.com. Sorry but that's the best I can do.

Is it Black bold .8mm

No, it is a bright blue. Not a black, or a black-blue.

In what country are these manufactured?

Hi J, These pens are manufactured in Japan. uni-ball team

Will these write on glossy stock like the 307 pen? Thanks.

Hi! 307 or our new 207PLUS+ work well on glossy paper. The innovative nano fiber ink is the “how”. Vision Elite does not work well on glossy paper. Hope that helps!

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🖊️ Write Bold. Stay Secure. Travel Smart.

CONSISTENT BOLD LINES - Uni-flow system delivers a smooth, steady ink flow for sharp, vivid writing every time.
INK LEVEL TRANSPARENCY - Visible ink supply window keeps you ahead of running dry—never get caught without your signature pen.
SECURITY YOU CAN TRUST - Uni Super ink locks into paper fibers, safeguarding your documents against fraud and alteration.
TRAVEL READY RELIABILITY - Vented refill technology ensures no leaks or explosions at high altitudes—perfect for the jet-setting professional.
LONG LASTING INK PERFORMANCE - Archival-quality, acid-free ink resists fading and water damage, preserving your notes and signatures.

The Uni-Ball Elite Rollerball Stick Pen features a vented refill to prevent leaks on airplanes, Uni Super ink that resists check washing and document tampering, and quick-drying, archival-quality ink that is fade- and water-resistant. Its Uni-flow system ensures consistent ink delivery, and a visible ink supply lets you monitor usage. Sold in a convenient 12-count pack with bold black ink, it’s the ideal pen for professionals who demand reliability, security, and style.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Manufacturer	Uni-Ball
Brand	Uniball
Model Number	61231
Colour	Black
Closure	Click-Off Cap
Material	paper
Number of Items	1
Size	12 count (Pack of 1)
Point Type	bold point
Ink Colour	Black
Manufacturer Part Number	61231
Manufacturer	Uni-Ball

Uni-Ball Elite Rollerball Stick Pens, Bold Point, Black Ink, 12-Count

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