The Spartan Tank by Horizon Tech is a BDC (bottom dual coil) Glassomizer Tank. The Spartan boasts heavy-duty and stainless steel construction, has adjustable airflow, and utilizes bottom dual coil atomizer heads. The Spartan also has the ability to fill from both the bottom of the tank (suggested for when the tank is dry) and the top of the tank (e.g. topping off before a car ride). The Spartan is also equipped with a unique, double faced air valve for excellent air circulation and cooling. The atomizer heads (coils) are replaceable, and come stock at 2.0 ohms. Included you’ll find an extra atomizer, an EGO-threaded support ring, and instructions to assist you with the Spartan.