“These tanks are excellent for the money. I bought the dual glass in black, and the crystal single glass versions. The dual glass is great, nice to be able to see straight through the tank when both sides of the mod are open. The gaskets are also really well done, no bunching or pinching like you can get in other Boro tanks. A couple of downsides though - these do not fit in an original Cthulhu AIO, which is why I bought the crystal version. I spent far longer than I care to admit rewicking as I thought it was my build, only to work out that the chimney sits a good bit off-centre when in the Cthulhu. From what I can see the 510 nut is slightly separating the the sections of the bridge because of the angle when screwed down, causing leaking through the airflow. Removing the O ring on the nut made no difference. Both tanks are fine in my Stubby's and Billet clone with the same build, and will stop leaking when you unscrew the nut to take the tank out. The crystal version is also not as clear as you would think from the pictures. Mine has machining marks on the sides and back, as well as on the base at the front where the glass slides up. The main body marks do disappear when filled with liquid though, leaving just the bottom visible. Well worth the money overall, especially the black dual glass, just a pity they don't fit the Cthulhu. Great service from Ecigone as always.”