These superfine technical illustration pens feature
Sakura Pigma Micron Pens Gwartzmans – Gwartzman's Art Supplies
Sakura Pigma Micron Pen - 02, 0.30 mm Tip, Green
Splendid Fountain Pen Ink Refills by Ooly – The Learnary
These fine-point pens feature waterproof, quick drying pigmented ink for permanency and true color reproduction. Use for graphics, drafting, illustration or accounting. Experience smooth, skip-free writing and crisp ink colors that leave consistent lettering and lines every time. The archival ink is acid-free, chemically stable and fade resistant. It does not smear, feather or bleed-through on most papers.
Micron Pigma 6 Pen Set Black
These fine-point pens feature waterproof, quick drying pigmented ink for permanency and true color reproduction. Use for graphics, drafting, illustration or accounting. Experience smooth, skip-free writing and crisp ink colors that leave consistent lettering and lines every time. The archival ink is acid-free, chemically stable and fade resistant. It does not smear, feather or bleed-through on most papers.
Micron Pigma 6 Pen Set Black
Advanced Lettering Set by Tombow – The Learnary
The Sakura Pigma Micron® 03 red pen is designed to create a medium wide 0.35 mm line., This pen uses red Pigma ink. The archival quality Pigma ink is
Sakura Pigma Micron® 03 Red Pen (.35mm) - Retail / Single
Advanced Lettering Set by Tombow – The Learnary
Pigma Micron Pen .25mm Black
Sakura Pigma Micron Light Cool Gray Set of 3