If you want to turn your Aspire Nautilus and Nautilus Mini Tanks into a cloud pumping, consistently wicking powerhouse, then you'll want to pick up this 5-Pack of Aspire BVC 1.8 ohm Coils These coil heads have a single Kanthal coil that has been placed at the bottom of the tank and the coil has been positioned vertically for enhanced flavor and production. It features organic cotton and a 1.8 ohm resistance, promoting the perfect balance of flavor and performance!