High volume tank equals higher air flow for larger vapor clouds; more room for wick equals more juice for more hits. Measures 22mm for a flush look on most mods. Delivers a clean steady pull with no turbulence in the vape stream. Zero resistance press fit terminal posts keep the power constant on every hit. Unique dynamic quad ring seal keeps any extra juice inside the tank. Dual o-ring design adds mechanical stability to tank and drip tip while directing the air flow right to your coils. Heat sink fin gives it a custom look and design and also removes up to 50% more heat during a chain vape.