Most rebuildable atomizers only allow you to drip liquid directly onto the tip, but the Smok RSST Atomizer also has a polycarbonate tank that collects any extra juice. Built with a stainless steel body and base, the RSST forms a solid front against any physical threat from the outside world. As it is rebuildable, you can switch out every part of the system, from the mesh wick to the rubber o-rings to the drip tip itself.