This advanced atomizer tank utilizes revolutionary BVC technology as well as includes replaceable coil heads with resistances of 0.3ohm, 0.5ohm, and 1ohm which makes for purer taste and bigger clouds. The tank has a 3mL capacity, 2.8mm air hole size and measures 70.6mm by 22mm. Its unique design employs a stainless-steel drip tip that has a silicone rubber sealing ring constructed for rebuildable dripping atomizers. The upper hardware also incorporates premium stainless-steel highlighted by a carved Aspire logo for a polished finish. The Atlantis V2 Sub Tank adds a unique touch, a cooling system that allows the user to adjust vapor temperature by rotating the top valve to control the flow of external cool air. By mixing cold air into the vapor stream, it keeps the tip cool and providing refreshing draws. The Atlantis V2 Sub Tank coil heads have much larger juice ports that allows your battery to push more wattage through them. All of the wicks are made of 100% pure organic cotton. The Atlantis V2 Sub Tank is compatible with mechanical mods that are 30A or higher. To fill, simply unscrew the base and add your favorite liquid from the bottom. This tank features an anti-leak design, replaceable 3mL Pyrex glass tube and standard 510 connection. With everything you need for endless, great tasting sessions, the Atlantis V2 Sub Tank by Aspire is a must have on the list!