Uni Pin Fine Line Drawing Pen, 0.3 mm, Archival Pigment, Water-Resistant, Low-Bleed, Ideal for Diagrams & Sketching - Red

The pigment-based ink is water-resistant and designed to resist fading over time, making it suitable for long-lasting diagrams and documents.

Low bleed means the ink minimizes feathering on most paper surfaces, helping edges remain sharp and lines stay neat even with small, dense fills.

Hold the pen like you would a pencil, apply light, steady pressure, and draw with smooth, even strokes. If using a ruler, the metal-clad tip helps glide cleanly for straight lines.

0.3 mm tip; archival pigment with water resistance; low bleed; metal-clad tip for template work; textured barrel for controlled strokes; designed for diagrams and sketches.

Yes. The metal-clad tip is designed to work well with rulers, helping you produce precise measurements and straight edges without excessive wear on the tip.

Diagrams, technical or schematic drawings, labels in planners, tidy notes, graphing in notebooks, and detailed sketching where crisp red lines are desired.

Fepy offers additional 0.3 mm Uni Pin Fine Line options such as Black and Blue, providing you with complementary colors for multi-tone diagrams. Examples: Black variant: https://fepy.com/products/uni-pin-fine-line-drawing-pen-0-3mm-black and Blue variant: https://fepy.com/products/uni-pin-fine-line-drawing-pen-0-3mm-blue

Cap the pen when not in use, store it in a cool, dry place. After heavy use, wipe the nib gently if needed and avoid pressing hard to prevent nib wear. Use a ruler or template as intended to keep lines clean.

Yes. The archival pigment is designed to be fade-resistant and water-resistant, making it suitable for documents, drawings, and archival-quality work.

Fepy typically offers a return window for unused items in original packaging; items may be eligible for return based on the store’s policy. Check eligibility at the time of purchase and follow the return process if needed.

The 0.3 mm tip provides fine, precise lines ideal for diagrams and annotations. If you need bolder lines, consider a 0.5 mm option; for ultra-fine work, a smaller tip like 0.2 mm may be preferred (availability varies by color and product line).