Set contents: 0.1 mm, 0.3 mm, 0.5 mm (1 each)
Ink: Black, water-based pigment
Features: Water resistant, light resistant, and smear-resistant
Uses: Drafting, notebooks, letters, illustrations, cartoon manuscripts, etc.
Product size: Maximum diameter: 0.4 inches (10.5 mm); 5.3 inches (135 mm) with cap