This is a MTL tank – basically designed for those who use the MTL (Mouth To Lung) vaping style. This is usually the default method that ex-smokers use – basically inhaling the vapour into the mouth and then “taking it back” into the lungs.
So a MTL tank usually requires a more restricted and controllable airflow system.
This is a RTA – a rebuildable tank atomiser – which basically means you install your own coil and wicking onto the build deck. So not for beginners really.