Well, as this is the new members forum and I'm relatively new to vaping I suppose I may not be considered completely stupid (if you're kind!) - or perhaps I may be anyway - but I've only just discovered what the Protank 3 beauty ring is for. D'oh! For a couple of weeks now I've had my Protank stuck on top of my Evod VV battery - great flavour/ vape by the way IMHO - but with a rather weird appearance and a tendency to wobble slightly (or, if tightened down, risk pushing the battery pin too low). It was only through reading another thread on this site that a comment someone had made in passing made the lightbulb come on in my head! That's the great thing about this forum, I'm learning so much (and enjoying it!) 