Dragon Incense Tower 20cm Incense Burner £25.00 New stock arriving soon. Dragon Incense Tower 20cm A Dragon on a rocky outcrop. For use with Backflow Incense. Backflow Incense is specially designed for incense burners that have a reservoir to channel the smoke. It pours down the incense tower with dramatic effects. Backflow incense cones are specially designed, they are cones that create a thicker smoke that cascades down from the cone rather than rising like traditional incense cones.