Augvape Occula RDA characterized its availability of single and dual coils. The innovative internal-post clamp design and PEEK insulators brings you the great taste of flavor. It also supports 510 thread which has the tensity of vaping. The adjustable airflow system helps a lot in escalating the taste as well. Main Features: 1. single and dual coils are permitted 2. PEEK insulators 3. innovative internal-post clamp design 4. adjustable airflow system 5. 510 thread adoption