This is for a FULL TANK OF CO2. You will receive a CGA 320 valve cylinder filled with CO2. Note that there is a tank deposit attached to this gas swap. If you have an empty CO2 cylinder with a Thirsty Quaker approved sticker on it (or if your tank was inspected recently), you can exchange it to receive a refund for the deposit amount.
Most tanks are aluminum, but in some rare cases you may receive a stainless steel tank.
WE CAN NOT SHIP THIS ITEM.