Aluminum (CO2) Cylinder with CGA 320 valve installed and carry handle/valve protector. Brushed aluminum body with plain dome (colors available), 35 LB capacity, 1800 PSI, DOT-3AL & TC-3ALM designed, high strength aluminum alloy 6061-T6, 8.0 inch diameter, 37.8 inch length, 1.125" UNF inlet thread.