I have a 390 cf ACETYLENE tank for sale.. its the bigest one you can get for your welding shop its almost the size of a 100 lb propane tank. You can cut for days without running out thats the best part about it .. Mine is full now .. If your a welder you know what it is already . They are close to 700 new and full .. Its Lin-weld ..Matheson . Tri-gas,,Perfect for a large shop or for some one who lives out in the boonies and dont like to run out all the time. Or cut up lots of scrap metal. And you can exchange it right off the truck .I did last time it was out .. I went with smaller bottle for me .. CASH ONLY ,, 785-346-5826 john