this unusual cake was made with 5 styrofoam circles with the center cut out. and with 2 thin sheets also of styrofoam. the end caps, you can find at any hardware store, and the top hex nut is made from play dough, the top part of this cake is a red velvet with butter cream icing, My sister-in-law designed and as well as iced this unusual cake, Im a firefighter and was doing a fire fighter's wedding, and wanted something that no one else has done yet.