Ok guys .. here is the pic of the 80 to 100 lb. cylinder I was wanting to know what it goes to . I acquired this from a guy down on his luck and needing a few beans . It had just been reconditioned at a very hefty price . Any guesses of what it is to or what kind of cylinder it is ? It can't use it on any of my equipment and thinking of selling it but need to know what it is first , lol .