Art Graf Water-Soluble Tailors Chalk Square Disc, Carbon Black;

Viarco is a family owned business since 1907 located in northern Portugal. They have developed unique blends of graphite, carbon, and binders to produce some of the highest quality sketching materials available today. This unique disc of intense black carbon can be used dry for drawing or with water soluble techniques for a wide range of shades. It can even be used directly with a brush.