It was a great little
tank at the time the 7mls was a draw for me as well. It has a plug top fill, JFC, Taifun style wicking and adjustable airflow (MTL to RDL). The two grub screws on the side allow you to square up the
tank with the mod after it is screwed on.
The one I had eventually started seeping between the acrylic tank and bottom trim. The tank is press fit with a little epoxy to hold the bottom trim on. I eventually picked up a replacement tank from either FT or 3F and didn't use it much after that as I moved onto other shinies.
Just as good as the Kayfun Undead, Taifun GS II and FeV3 I was using at the time. If you can still find one in stock cheap, it is a worthwhile tank if you enjoy the older Kayfun/Taifun type of vape.
Look for a Tobeco version of it if you can, now there is a name you don't hear much these days.