Uni Pin Fine Liner
UNI PIN Fineliner Drawing Pens (12-Piece Set, Black)
(image from Amazon)
Quick Specs 🏷️
Type: Fineliner Drawing Pens (Pigment ink, black)
Tips/Nibs: Assorted fine tips (typical range: 0.05mm to 0.8mm)
Set Size: 12 pens (all black ink, varying tip sizes)
Purchase Info: Link | Purchased: April 2021 | Price: $20.99 USD (approx. $1.75 per pen)
Official Product Highlights
- 12-piece set of black fineliners with assorted tip sizes for varied line weights.
- Pigment-based ink – waterproof, fade-resistant, and quick-drying.
- Durable, strong nibs – resist bending or fraying even in the smallest sizes (users report better durability than Sakura Pigma Micron).
- Skip-free, consistent ink flow – no sputtering or skipped lines.
- Minimal bleed-through on most papers (may bleed slightly on very thin paper like Hobonichi).
- No smearing – ink dries quickly and won't transfer or smear on hands.
- Versatile uses – sketching, Zentangle, illustration, manga, technical drawing, stone painting, and rock art.
- Works well with erasers – lines fade only slightly when erased over.
Additional Specs
| Property | Details |
|---|---|
| Consistency | Fluid pigment ink |
| Finish | Matte / Opaque black |
| Drying Time | Very quick (seconds) |
| Water Resistance | Yes (waterproof when dry) |
| Pigment Type | Pigment-based (archival quality) |
| Lightfastness | Fade-resistant (archival) |
| Intermixability | Can be used with watercolor, markers, etc. |
| Non-clogging | Replace cap after use; nibs stay reliable |
Typical Tip Sizes in Set (12-piece)
| Size (approx.) | Common Use |
|---|---|
| 0.03mm (003) | Extreme micro-details, eyelashes, fine cross-hatching, signatures on tiny surfaces |
| 0.05mm (005) | Ultra-fine details, hair, textures |
| 0.1mm (01) | Fine lines, hatching |
| 0.2mm (02) | General drawing, outlines |
| 0.3mm (03) | Versatile sketching |
| 0.4mm (04) | Bold lines |
| 0.5mm (05) | Stronger outlines |
| 0.6mm (06) | Heavy lines |
| 0.7mm (07) | Filling larger areas |
| 0.8mm (08) | Broad strokes |
| Brush | Variable line widths, calligraphy, inking, expressive strokes, filling large areas quickly |
Color Gallery
Size Comparison
Tested on Bee Paper Super Deluxe Paper
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Overall Strengths & Weaknesses
Rating: 4.9 ★★★★★
The main fine liners I use are Uni Pin 03. I use them to doodle on any paper besides the Canson papers. Work really well with Bee Paper Super Deluxe Paper.
What works well
- Rich, dark, very black.
- Water and alcohol proof.
- All kinds of great colors and lines.
What doesn't
- Can transfer ink to the other side when using thick layers of ink.
Tips
- Work slow and let dry. Be careful of smudging.