Pigma Micron Creative 12 piece gift set with pen case : 9 colors (Size 05) with Black (01 - 0.25mm, 08 - 0.50mm, Brush - Flexible) Used in illustration pens, zentangle, manga comic, calligraphy, Card making, coloring, bullet journal, bible journaling highlighter pen, scrapbooking supplies Archival quality ink is chemically stable, waterproof, fade resistant, quick drying, ink does not bleed through the thinnest paper Water-based ink, No smears, feathers, or bleed-through on most papers, ideal for drawing & sketch pens Be INSPIRED, Be CREATIVE with this Felt tip pen Set