Sax Earthenware White Clay allows for extended working time, making it ideal for the ceramic classroom. Unique qualities of 50 pound dark gray clay in its moist form fires to a white bisque and matures to a bright white. A highly versatile Non-Toxic clay capable of providing delicate hand-built forms, graceful wheel thrown pieces or bold sculptures. The ideal firing range is 06-04, but it can be fired as high as Cone 5.