KOI Coloring Brush Pens – 6 Gray Tone Set | Professional Shading & Sketch Brush Markers

The KOI Coloring Brush 6 Gray Set is specially designed for artists who value depth, tone, and precision in their artwork. This set includes six carefully selected gray shades that help create smooth transitions, realistic shadows, and professional-quality shading. The flexible nylon brush tip responds naturally to pressure, allowing you to switch effortlessly between fine details and expressive strokes. Its water-based ink blends seamlessly, making it ideal for layering, tonal studies, manga art, fashion sketches, and monochrome illustrations. The ink dries quickly, keeping your artwork neat and smudge-free. Compact and easy to carry, this set is perfect for both studio work and creative sessions on the go, delivering reliable performance and elegant results every time.