1 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. 21-02760 is green, 21-02761 is purple, 21-02762 is blue. Dimensions are 1-7/16" x 3-1/8" x 6-1/2". Sold individually.