This CO2 cylinder is produced from high strength aluminum alloy that is lighter than steel and doesn’t rust. Remember, the tank must be used in a fully upright position, so do not tilt it or lay it on its side. It’s easy to fill; just check out your local listings under "Gas,” or try local fire extinguisher supply or welding supply companies. Please note: Due to Federal regulations, we cannot ship this tank filled. In other words, when you receive this tank it will be EMPTY. FeaturesNOTE: Cylinders have DOT approval to be filled with several gases including NITROGEN, BLENDED...