Roadcraft Tower Backflow Incense BurnerA unique design of roadcraft backflow incense burner gives an aromatic furnace smell indoor." Hand Crafted with the most smooth ceramic it is a statement piece, making a perfect gift to someone or for yourself! Once Backflow Incense Cone is lit and placed on the burner designed place, watch as the smoke gently pouring down as the smoke winds its way down from the top of the burner and over the pathway effect of the chosen burner. NOTE: Incense Cones