Double-tip MARKER DESIGN:Double-tip Brush Pen allows you easily switch between creating crisp details and laying down thick, thin, or varied lines in one stroke. 0.4mm fine tip is great for sketching, outlining, and details, works well for intricate coloring books, writing, and doodling; 1-2mm soft brush tip for shading, coloring, quickly coloring in large areas art projects, hand lettering, and calligraphy beginners. 100 UNIQUE COLORS:The high-quality water-based ink seamlessly blends…