You are buying 1 black tank, 1.6ml Volume Capacity Wickless / Top Fill. This tank fits our XPS Express pen, as well as most other popular vaporizer brands that utilize a 510 thread.
Easy fill tank system - can be filled directly from your juice bottle, just tilt and fill up to 1.6ml.
Mouthpiece simply inserts and then screws down for a complete seal with an added silicone o-ring on mouthpiece.
Completely sealed at the base and Manufactured from thick durable polycarbonate.
These cartridges to be used with E Juice and all Oils. The measuring scale lets you see the amount of E Juice/ Oil remaining. Also the unique heating element in the chamber heats up your substance evenly and neatly.