interesting. the tank I got was aluminum and only about 35 inches tall. But if I'd get the taller oxy or Inert gas cylinders, would it not they produce both quench tank and a gong? as to being greedy, well they seem to think I'm doing them a favor hauling their junk away. too bad there is really no way to easily repurpose acetylene tanks, as there are some of them there for the taking as well. I've known the family who owns the business since I was about 14.(I'm chronologically advanced now) a few brothers who are locally famous drag racers and general hot rodders, so I'm somewhat connected by past experiences. .