Double-Line Gel Pen 0.1/0.3/0.5mm – Art, Design & Notes

N2HAO Double-Line Gel Pen – Precision for Every Stroke

Elevate your drawings, sketches, and handwritten notes with the N2HAO Double-Line Gel Pen. Available in three ultra-fine tip sizes — 0.1mm, 0.3mm, and 0.5mm — this pen delivers crisp, clean dual-line output in one smooth pass. Whether you're tackling architectural blueprints, design exam sheets, detailed illustrations, or everyday note-taking, these pens give you the precision and consistency you need.

Key Features

• Three Tip Sizes: 0.1mm, 0.3mm, and 0.5mm — choose the level of detail that suits your project
• Double-Line Output: Creates two parallel lines simultaneously for architectural grids, technical diagrams, and decorative lettering
• Smooth Gel Ink: Black gel ink flows evenly with minimal skipping or bleeding, perfect for fine detail work
• Lightweight Plastic Body: Comfortable to hold during long drawing or writing sessions
• Versatile Use: Ideal for architecture exams, design projects, journaling, bullet journaling, manga art, and creative note-taking
• Available in Sets: Choose from 1-piece or 3-piece packages to match your needs and budget

Specifications

• Brand: N2HAO
• Material: Plastic
• Ink Color: Black
• Tip Sizes: 0.1mm / 0.3mm / 0.5mm
• Package Quantity: 1 or 3 pieces
• Country of Origin: Made in Mainland China

Perfect For

• Architectural and technical design drawings
• Design and art school exams
• Detailed sketch and illustration work
• Bullet journaling and creative note-taking
• Manga, comic, and fine-line art

Please allow a 2–3% dimensional variance due to manual measurement. Actual ink color may appear slightly different on screen depending on your monitor settings.

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Frequently Asked Questions

Q: What makes a double-line gel pen different from a regular gel pen?

A: A double-line gel pen features a specially designed tip that produces two parallel lines in a single stroke. This makes it ideal for architectural drawings, technical grids, decorative lettering, and any project where consistent parallel lines add visual impact or structural accuracy.

Q: Which tip size should I choose for architectural design exams?

A: For fine architectural detail and technical line work, the 0.1mm tip offers maximum precision. The 0.3mm is great for standard line work and annotations, while the 0.5mm suits bolder outlines and quick sketches. Purchasing the 3-piece set gives you all three for complete versatility.

Q: Is the ink smear-resistant for use on exam papers?

A: The black gel ink is designed to dry quickly and deliver clean, consistent lines. While performance may vary slightly depending on paper type, the ink is well-suited for smooth drawing paper and standard exam or drafting sheets.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.