A great bumper pack of long-burn backflow incense cones, the fragrances included are Rose, Lily, Jasmine, Lavender, Green Tea, Sandalwood, and Patchouli. Most incense cones burn for around 20 minutes but these have a burn time of around 30 minutes, making them a great value pack with a good variety of fragrances to suit your mood. The difference between backflow cones and regular ones is that these are suitable for backflow burners, because they have a little hole drilled through them, when placed on a \'backflow\' burner the smoke is pulled down, creating tumbling smoke effects, these backflow cones are also suitable to use as regular cones. Long Burn Back-Flow ConesApprox 70 ConesAssorted Colours and FragranceSuitable for Regular and Backflow Cone Burners