Tombow Dual Brush Pens have two tips: one fineliner for technical work and outlines, and one larger brush tip, which is springy and allows for a wide range of naturalistic stroke sizes. The water-based ink is odorless, non-toxic, blends easily, and won't bleed through most papers. Tombows are perfect for fine art projects, journaling, design, coloring books, lettering, manga, and craft projects. The primary set comes with a standard rainbow set of colors for a variety of projects. Includes colors 847, 925, 055, 245, 346, 476, 565, 879, N15, and a clear N00 blender (pictured left to right).