Re: cobra bowl
As Kalutika said they look a lot like the Crown Classics. I don't have one of these Cobra bowls but I do have a Crown classic and it works supremely well. The nice part about my crown classic is that it holds the right amount of tobacco for one session(which I find to be a little less than the vortex), and heats up quicker than any bowl I've had before. Another thing to note about this design is that it seems to work better with a different hole pattern than one would use for a vortex or Egyptian bowl which Dee's video review explains.
36" Al Falkher Solid - 36" KM Copper Heart Two Hose - 22" Temsah Mini-Wheat(a.k.a. Golden Nugget)