4 Types of Truss Bridges: Which is Worth the Weight? Backflow Incense Burner Moon Face. Experience tranquility with our moon face backflow incense burner, made from premium stone powders, perfect for enhancing your space. Raw beech wood is used for the base of the backflow incense burner and the wood is shaped by hand simply beautiful. Note: The incense may go out depending on the airflow in the environment, and you can continue to use the extinguished incense by burning it again. Diameter for moon figure: 10 cm 4 inch Diameter for wood tray: 12 cm 4. 7 inch