Wald Glass Tops are hand made by glass blower Rolf Wald. First he creates rods of glass with varying designs inside. Then, while heating the center, he presses the ends together which flairs out the center to create the body of the top. He then cuts off the ends and rounds them off under a flame before putting them in a kiln to be annealed. These tops are great spinners and can even spin upside down. Each top is unique and will be selected randomly. Therefore, the top you receive may be different from those shown. Approximate Diameter = 1 1/8 inches (29 mm), Height = 1 1/2 inches (38 mm).