In many families, the Christmas windmill is a cherrished tradition. A Metal(or wooden) fan rotates above a collection of angels. Heat from the candles below causes the fan (and therefore the angles) to spin. As the angles spin, they lightly 'ding' the bells below.
None of this can happen with the Pyramid Candles below.
Pyramid Candles For Windmills: .625 x 4 inches - Box of 12