Attributes

Brand	-
Category	Stationery, Educational Electronics & Office Supplies / Technical Pens
Origin	-
Brand	Uni Mitsubishi
Tip Size	1.0 mm
Ink Type	Water-based Pigment Ink
Color	Black
Material	Plastic Barrel with Metal Tip
Origin	Japan
Usage	Drafting, Manga, Sketching, Engineering
Line Quality	Consistent and Smudge-proof
Cap Type	Snap-on Cap with Clip
Package Contents	1 x Fineliner Pen

6 reviews

Anonymous

Mar 31, 2026

Rating: 5/5

Student favorite

Bought this for my engineering drafting class. It makes clean lines on tracing paper and erases cleanly if I make a mistake before the ink sets.

Anonymous

Mar 26, 2026

Rating: 5/5

Smooth and reliable

Been using Uni pens for years. This 1.0 size is great for bold headers and outlining. Never had one dry out on me prematurely.

Anonymous

Mar 15, 2026

Rating: 5/5

Manga artist essential

I use these for inking my manga panels. The water-based ink dries quickly and doesn't bleed through standard sketchbook paper.

Anonymous

Mar 08, 2026

Rating: 5/5

Perfect for architectural sketches

The 1.0mm tip provides a bold, consistent line that is perfect for my initial building outlines. The ink flows smoothly without skipping.

Anonymous

Mar 05, 2026

Rating: 4/5

Great quality, slightly pricey

Excellent build quality and very comfortable to hold for long drawing sessions. Slightly more expensive than other brands but worth it for the reliability.

Anonymous

Mar 01, 2026

Rating: 4/5

Good for general stationery

Works well for journaling and bullet points where you need a thicker line. The cap clicks on securely so it doesn't dry out in my bag.

5 FAQ

Q: What is the shelf life of the pen if unopened?

A: If stored in a cool, dry place with the cap sealed, an unopened pen typically retains optimal performance for up to 3 years from the manufacture date.

Q: Is the ink waterproof once dry?

A: Yes, the pigment ink is water-resistant and smudge-proof once it has fully dried on the page.

Q: Can this be used on fabric?

A: While the ink is permanent on paper, we do not recommend using it on fabric as it may not withstand washing and could bleed.

Q: Does the 1.0mm tip come in other colors?

A: Yes, the 1.0mm size is available in black, blue, red, and brown, though availability may vary by region.

Q: Is this pen refillable?

A: No, the Uni Pin Fineliner is designed as a disposable pen. Once the ink runs out, the entire unit should be replaced.

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