Just got home from the headshop with this tube. I am a fucking impressed. For those of you who don't know, US Tubes are tubes that are known for thick, high quality tubes. Their joints are oversized, and they come with the innovative "d" cut vented diffuser. One of the things that distinguished US Tubes is that the ENTIRE tube is the same thickness, rather than the neck being one thickness, and the bubble being very thin. This thing is a fucking beast from top to bottom. My particular tube has these specs- 18 inches Blue Label Cobalt Lip Wrap Cobalt Joint Cobalt 14mm Bushing Diffuser I also snagged a Mer-tini that matched it. 14mm joint. Really great snapper.