https://vapefu.com/en/59-coilsIntroducing the Kanger Sub-Tank Plus, the newest generation of the highly acclaimed Sub-Tank series! The Sub-Tank Plus now can be filled with up to 7 milliliters of juice, as well as integrating new dual slotted adjustable airflow for an even wider range of airflow options! The 510 contact has been redesigned and now utilizes a set, none spring-loaded contact. A new drip tip is also included, shortening the overall profile while offering a cleaner, minimalist look. Experience the freedom to switch between Kanger's newly designed Organic Cotton Coil Heads (OCC) and a new rebuildable atomizer head! Each OCC is made out of organic cotton producing better flavor and a cleaner taste. Easily switch from set coils by simply replacing your coil heads to the RDA head which you can build to your own desired level.