Medium brush point, assorted shimmering pigment ink color that is acid free, archival quality and water-resistant for a long-lasting impression.flexible brush tip mimics an artist's paint brush and enables you to achieve fluid, elegant strokes, and create painterly brush-like marks while letteringshiny metallic ink maintains its vibrancy on both light and dark papers, and delivers a rich color and vivid lines that stand out, perfect for creating artworkversatile brush point combined with solid pen construction create the perfect balance between detailed ink laydown and durability.colorful ink brush pens are ideal to use for lettering, coloring, bullet journaling, and for creating illustrations and manga on almost any paper surface.