The Original The Original Chartpak AD Marker, Tri-Nib, Blender (Colorless), 1 Each (P-O) Professional, xylene-based marker for art and design Tri-Nib permanent marker blends and transfers on paper, acrylic, ceramic, egg shell and more This colorless blender creates unique colors, transfers images and produces watercolor-like effects with colored pencil, graphite and charcoal Use with AD Marker's 131 rich, vibrant colors that perfect for blending and shading, and won't streak or feather Non-toxic, conforms to ASTM D 4236 and made in USA