Creative Hobbies Ceramic Mold Rubber Bands, Special Heavy Duty Formulation, 1 Pound Bag - Assorted Sizes Creative Hobbies Ceramic Mold Rubber Bands are a natural, heavy duty formulation Ideal for ceramic and pottery use to hold plaster molds together. Great for woodworking projects to hold parts together for gluing. Approx. 7/8 inch wide x over 1/16 inch thick. Assorted size bag contains sizes 3 inch to 9 inch. Imported.