1/6 lb. Matt Carving Wax Bars A special wax used in making models to be cast in metal. Can be carved, sawed, filed, machined or turned on a lathe, or melted to build up shapes through layering. Available in three grades of hardness; green is hard with little flexibility, but is not brittle. Purple is medium flexibility and blue is most flexible. 21-02750 is a kit which includes each of the three grades of wax (green, purple and blue). 21-02752 is purple. 21-02753 is blue. Dimensions are 1-7/16" x 1-1/8" x 3-1/8". Sold individually.