PME 12.5\" Plastic Hollow Dowel Rods - Pack of 4 These pillars are 12.5\" tall, and hollow, therefore making them ideal when needing a dowel and pillar all in one for your multi tiered cakes. Simply push them into the cake and cut off where required. They will give extra stability, being hollow, with a diameter of 2cm. They can be covered with sugarpaste and then decorated as required with flowers, leaves or any other decoration to suit. Dimensions: 12.5\" (H) x 20mm dia.