Metal box of 20 Aquastic Cretacolor watercolor oil pastels Oil-based artists' watercolor oil pastels impress with their smooth color application and bright, particularly opaque colors. In addition to excellent water solubility and high pigment content, they stand out for their high light resistance. All Aqua Stics have been tested for light fastness (210 hour xenon test). This corresponds to illumination under museum light for approximately 100 years. All Aqua Stics comply with the two best lightfast classes, i.e. class LF1 and LF11. Pastels are ideal for various techniques such as watercolor, encaustic, sgraffito, and in addition to paper and cardboard, they also adhere excellently to canvas, wood, leather, glass and mirrors. There are practically no limits to the possible uses.