Large Dragon Pool Backflow Incense Burner. Black Ceramic. L 12cm x W 16cm. x H 12cm.Backflow Incense Burner are specially designed to create smoke that cascades downwards, pouring dramatically down with a stunning effect. Once you have lit your incense cone, it will begin to smoke, the incense is heavier than air and it will fall dramatically in swirls and twists, through the hole and down over the item, to pool at the bottom. Our Backflow Incense Burner is suitable for home, office, teahouse, meditation, yoga studio... Please note: In order to create the smoke cascade effect you will need to use backflow incense cones.