SAKURA
Sakura Pigma Micron (6-Pack)
Best for: Manga artists, graphic designers and journalers who need fine black lines

TWOHANDS
Twelve black fineliners in fixed widths from 0.2 mm to 3.0 mm plus a brush pen, with waterproof archival ink, size-labeled caps and a storage pouch.
Best for: Technical drawers, illustrators and journalers who switch line widths often
The TWOHANDS Fineliner Set is 12 black technical drawing pens in fixed line widths from 0.2 mm to 3.0 mm, plus a brush pen. Each cap is printed with its size, so you can grab the right width without test strokes.
The listing describes the archival ink as waterproof, chemical resistant, fade resistant, bleed free and quick drying. The set comes in a storage pouch, which keeps all 12 pens together in a bag or drawer.
Based on the manufacturer's Amazon listing.
The set has 0.2 mm (005), 0.25 mm (01), 0.3 mm (02), 0.35 mm (03), 0.40 mm (04), 0.45 mm (05), 0.50 mm (06), 0.6 mm (08), 1.0 mm (10), 2.0 mm (20), 3.0 mm (30) and a brush pen.
Every cap shows its size, which makes it quick to keep the pens in order and pick the width you need.
The listing says the ink is waterproof, chemical resistant, fade resistant, bleed free and quick drying.
Each pen draws one consistent line weight, which suits diagrams, architectural sketches and clean illustration lines.
The set includes a brush pen (BR) alongside the fixed sizes, for thicker marks.
Each set comes in a handy pouch for carrying and storing the pens.
Look elsewhere if: you want a smaller set in Sakura's archival Pigma ink. The Sakura Pigma Micron (6-Pack) has six sizes from 0.20 mm to 0.50 mm.
TWOHANDS Fineliner Set (12-Pack)
Choose it for: Labeled caps and a pouch
Muchcute Micro Fineliners (12-Pack)
Choose it for: A similar range with ASTM and EN71 safety claims
Choose it for: One extra pen and a finer 0.15 mm point
SAKURA
Best for: Manga artists, graphic designers and journalers who need fine black lines
KOUSICOO
Best for: Doodlers, zentangle fans and comic beginners who want many line widths
Ohuhu
Best for: Adult colorists who want brush strokes and fine detail from one marker