The Sakura Pigma Brush Pen Set of 8 Colours features flexible, durable brush-tipped pens designed to behave just like a traditional paintbrush for varying line weights. Every pen is filled with legendary, archival-quality Pigma pigment ink that dries exceptionally fast to deliver waterproof, chemical-proof, and completely fade-resistant results. This versatile kit provides non-toxic, smudge-proof performance that will not feather or bleed through even the thinnest sketch papers.