Steel 120 cubic ft galvanized tank. These are 3500 PSI working pressure and DIN only. These CANNOT be converted to pro valves and CANNOT be used with yoke valves. 300BAR DIN valves. Tanks have an October 2025 Hydrostatic Test and VIP date. They are nitrox clean and valves have just been serviced. Tanks will be filled with your choice of hyper pure air or 32% nitrox (if certified). Pickup in shop only. No shipping. First come, first pick of the 3.