VIDEO: HOW TO CARE FOR YOUR SILICONE MOLD Another great center support structure to design your amenity around. When you need that ultra modern look, these Spanky Half-Rounds will deliver. A gentle bevel runs along the perimeter from the base to the top. They look great standing upright or as a base resting on their side edges. Size: Each half-round is 8" tall x 3½" wide x 1" thick. Size: Each half-round is 20 cm tall x 9 cm wide x 2½ cm thick. Made of food contact safe silicone. Wash before use. Do not heat above 450° F/ 232° C. Handmade in the USA.