Koh-i-noor Gioconda Soft Pastel Pencils, 24 Assorted Rich pigment works well for shading and detail work, and can be used alone or in combination with conventional pastels or other media. Easily blended with a tortillon (stump) and can be finished with a fixative to prevent any additional spread of pigment Soft pastels are made from the highest quality, pure micro-pulverized pigments and are carefully mixed with a base of calcium carbonate and other quality binding agents Lush, lightfast and fade-resistent 4.2mm diameter pastel Encased in California Cedar, creates less mess and dust particles than traditional soft pastels