The product is a lot of 2 Tippmann & JT 20oz CO2 paintball tanks, made in the United States. These tanks are flat bottom aluminum and require a hydro test for safety. As they are expired, they do not have any pressure but can be filled with CO2. Perfect for individuals looking for a reliable source of CO2 for their paintball adventures.  Date on JT tank - 2-2021.  Date on Tippmann - 3-2020.