Sanford(R) Prismacolor(R) Professional Thick Lead Art Pencils

The thick, pigmented leads blend easily on paper, vellum, wood or plastic film. Best described as a color pencil without the color, the colorless blender is a new pencil created to blend and soften hard edges of color pencil artwork. Comprised of a clear, clean formula that allows for heavy layering, while colors below remain bright and brilliant. Conforms to ASTM D-4236.