I'm sure there's not much more that can be said about these tanks. I purchased a 19mm Standard with Stainless Caps. Luckily, I was able to get some Ikenvape Cartomizer's for it too! The Quality and overall finish are exactly what I was hoping for. It seems to be a very solid piece. The glass/pyrex also appears to be quite hefty. The Stainless Caps are finished nicely and the O-Rings provide an excellent seal. The fit of the Carto is perfect, there's no slop whatsoever! IMHO it's a fantastic looking tank. Whats more important is with a quality Carto, it hits like a train! I've been using this for a week and a half, and love it. I wish someone would have told me to get one of these when I started vaping. I could've saved some cash for sure! I wanted to give my review the day I set it up, but I wanted to give it a day or two! Basically, I've ordered two more and will probably never look back! For me the flavor, draw and Vapor production are exactly what I was looking for. If you're considering a tank, I couldn't give any higher recommendation than the IBtanked brand! Thanks Baditude!