

🎨 Elevate every line—where precision meets permanence.
The Uni-Ball FINE Marker 0.05mm Black is a premium waterproof fineliner pen featuring an ultra-fine tip for exceptional detail work. Its smooth, consistent ink flow and fadeproof qualities make it ideal for artists, designers, and professionals seeking precision and durability in every stroke.
| ASIN | B00A7BSEKK |
| Additional Features | Waterproof |
| Age Range Description | All ages |
| Best Sellers Rank | #421,239 in Office Products ( See Top 100 in Office Products ) #2,452 in Permanent Markers & Marker Pens |
| Body Shape | Cylindrical |
| Brand Name | Uni-Ball |
| Closure Type | Snap |
| Color | Black |
| Customer Reviews | 4.3 4.3 out of 5 stars (739) |
| Global Trade Identification Number | 04902778798805 |
| Grip Type | Smooth |
| Hand Orientation | Ambidextrous |
| Ink Base | Water |
| Ink Color | Black |
| Is Waterproof | true |
| Item Dimensions | 0.59 x 0.59 x 5.47 inches |
| Item Type Name | Uni-Pin Waterproof and Fadeproof Fine Line 00.5mm Black |
| Item Weight | 0.01 Kilograms |
| Line Size | 0.05 |
| Manufacturer | Uni |
| Manufacturer Part Number | F803057 |
| Marker Type | Permanent Marker |
| Material Type | Plastic (PP) |
| Model Name | PIN |
| Model Number | F803057 |
| Number of Items | 1 |
| Number of Pieces | 1 |
| Pattern | Letter Print |
| Point Type | Fine Line |
| Recommended Uses For Product | Drawing |
| Style | Modern |
| Surface Recommendation | Cardboard |
| Target Audience | Adult, Kid |
| Theme | Art" or "Design |
| UPC | 785525550048 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Waterproof |
| Writing Instrument Form | Roller Ball Pen |
K**S
Best line ever...debatable, sure. But true.
This pen is amazing. Stark, stroke ink line, does not skip or flutter. I don’t use it much, I’m definitely saving it for a detailed work, but I will say I am pleased at the quality of the pen, and while I don’t like the price point—I do enjoy the pen. I will purchase again most definitely if the price remains consistent. I definitely would recommend it for any fellow pen-lover who drafts by hand.
J**N
Uni Pin 0.5 Pens
These pens are great to draw or write on fabric, as well as scrapbooks, cards, etc. I love the way they write and how they fit my hand. I don't even have to worry about them rubbing or running onto other fabric when washed. I just wish they were sold in the US. But they arrived very quickly - and in perfect shape.
D**P
don't buy this as a writing implement as you will be disappointed, much better for artists
Can write very thin, don't buy this as a writing implement as you will be disappointed, much better for artists.
A**A
Five Stars
Amazing pen! Helps me give unique texture and contrast in my drawings.
A**A
Is not waterproof
I bought this pen because said waterproof but is not!
B**Z
good enough
not as thin as i thought
M**A
Good size, thin and sharp lettering
Stopped working after a week of light use. Worked well when it did actually write though. Good size, thin and sharp lettering. Won't buy again though.
M**R
pen didn't work, all dried out when I received ...
pen didn't work, all dried out when I received it in the mail. no return policy so I guess im stuck with a $8 pen that never worked!!
T**S
No clogging, no leaking. It works pretty good.
A**O
Es muy preciso. La tinta es negra oscura, sin tonos marrones. Se agradece que no haya llegado seco, como otras marcas. Subo un par de dibujos, uno con aguada y otro sólo tinta (uso otros calibrados también, no sólo el de 0.05), para que se aprecie la calidad del trazo. Los de tinta y aguada son diferentes porque uso la misma aguada, pero cambiando la calidad del trazo de la tinta. El de arriba a la izquierda sólo tiene las líneas de contorno imprescindibles, el de la derecha tiene más sombreados con tinta, y el de abajo tiene mucho más sombreado, con lo que el resultado es más apagado. Sólo con tinta hubiera quedado mejor, pero al añadirle la aguada los colores quedan más oscuros y sin brillo. En definitiva, un buen calibrado si quieres una punta muy fina y que no falle a la primera.
I**N
I buy UniPin Fineliners regularly, and they’re a favorite in our household. These pens deliver sharp, consistent lines that are perfect for sketching, drawing, or detailed writing. The ink is richly pigmented and doesn’t smudge, even on lighter paper. They’re long-lasting and reliable, making them ideal for both casual and professional use. Whether you're outlining a drawing or adding fine details to artwork, these fineliners handle the job with precision. I’ve never been disappointed with their performance, and they remain my go-to choice for quality pens.
A**I
Great product ! ON TIME DELIVERY!
M**A
Ela é bem fina mesmo , não tive problemas com ela (so em relação as réguas ) mas tudo muito bem
Trustpilot
Hace 2 semanas
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