Uni Pin Fine Line Drawing Pen, 0.5 mm, Archival Pigment, Water-Resistant, Low-Bleed, Ideal for Diagrams & Tonal Notes - Dark Grey

A 0.5 mm nib delivers tidy, medium-thick lines that strike a balance between precision and visibility—great for diagrams, technical sketches, and clear annotations without overpowering the page.

The pigment-based ink is designed to be long-lasting and resistant to fading. It behaves as water-resistant once dry, helping your diagrams and notes stay legible over time.

The formulation minimizes feathering to keep margins sharp and lines crisp, especially when used with planners, grid pads, or sketchbooks.

Yes. The barrel texture is designed to help you maintain a steady grip and produce controlled strokes, even during longer drawing or writing sessions.

The pen uses a metal-clad tip that remains stable when drawing against rulers and stencils, helping you achieve template-safe lines.

Planners, grid pads, and sketchbooks are ideal. The ink performs well on many standard drawing and note-taking papers, but very glossy or coated surfaces may affect line behavior.

Use short, deliberate strokes and apply even pressure for consistent line width. Allow the ink to dry before handling to avoid smudges, and cap the pen when not in use to preserve the nib.

Keep it capped when not in use and store it in a cool, dry place. A horizontal or slightly angled orientation helps protect the nib from pressure or damage.

If you’re exploring alternatives, you can check similar 0.5 mm or 0.3 mm fine-line pens in darker or black ink variants, such as: https://fepy.com/product/uni-pin-fine-line-pen-0-5-mm-black-mi-pin200-05-blk and https://fepy.com/product/uni-pin-fine-line-pen-0-3-mm-black-mi-pin200-03-blk. These provide comparable line quality with different nib sizes or tones.

Choose this pen for a reliable 0.5 mm line with archival, water-resistant pigment and a steady feel. If you need a finer line or a different color, compare against other Uni Pin or equivalent fine-line options on Fepy to find the best fit for your project.

Yes. If it doesn’t meet your expectations, you can return the item under Fepy’s standard return policy, applicable to eligible items and orders.