Chartpak AD Marker, Tri-Nib, Blender (Colorless) is a professional, xylene-based marker for art and design. The 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 The 130 rich, vibrant colors that perfect for blending and shading, and won't streak or feather. Conforms to ASTM D 4236. Made in USA.