Full 20# propane tanks. I've replaced them with new, so these are extra. They're too old to refill, so I'm only asking for the value of the propane (I know a place that fills them). Then you've got a tank to trade in! The 30# tank is empty and free if you want it, but it's too old to refill too. Calls or texts are best, I don't check my emails often. $15 each.