I think you posted that in the wrong place, smoktek isn't Smoktech, although it's easy to confuse the names.The ones that smoktech send are total crap.
The "stainless steel" got scratched in a bag, just with my phone, with no sharp edges or anything and it overheated once and never opened again..
https://www.e-cigarette-forum.com/forum/threads/smok-xcube-2-circuit-damage.705659/