Edges are rounded so it is easy to make a fondant-covered fake cake look like a real cake fondant-covered cake. Sizes are 6", 8", 10" and 12". Each is 3" high, but set includes a 1" circle for each size dummy so if a 4" cake is desired, the circle may be added. Due to the bulkiness of this product (especially when ordered in multiples), UPS oversized fees may apply. There is a $3.00 surchage for this item.