Empire BASICS High Pressure Air(HPA) Tanks, 68ci Capacity, Lightweight carbon fiber cylinders, 4500 PSI fill capacity with an 800 PSI output pressure, Both high and low pressure rupture disks installed for highest level of safety, Top rated Empire Stainless Steel V3.0 fill nipple, Five-year retest cycle, DOT and TC certified, "Made in the USA", All components meet or exceed all ASTM, DOT, TC or CGA standards or requirements. Top bonnet is Aluminum, dyed Black. Manufactured by Empire.