Riptide is a sub-ohm tank with 0.5 ohm bottom vertical coil (BVC) made of USA Kanthol wire. The metal mesh around the organic cotton throttles the liquid flow and disperses it more evenly to prevent spit back and gurgling. Fires up to 80W with most premium liquids, but is best used at 65W or less. Comes with adjustable airflow and an adjustable pin connector to ensure you get an optimal connection regardless of the battery you are using. Comes with a heat dissipating Delrin insert and wide-mouth drip tip that is changeable on the 4.0 mL Pyrex tank. Easy open bottom fill with fine machined threading makes this sub-ohm tank the Mercedes of the e-cig industry. Use with any larger SV batteries that are compatible with sub-ohm tanks (like Pandora, Vogue, Cuboid, Torch or Evic).