Nib Sizes: Typically includes five distinct tip sizes: 0.05mm, 0.1mm, 0.3mm, 0.5mm, and 0.7mm. .

• Ink Quality: Uses high-quality archival pigment ink that is waterproof, fade-resistant, and chemically stable.
• Performance: Designed to be smear-resistant and provide minimal bleed-through on most paper types, making it suitable for double-sided work.
• Durability: Features a metal-clad needle tip for precision and consistent ink flow during detailed tasks like drafting blueprints or intricate illustrations.