Firestone Air Tank / Reservoir Tank Capacity:1 Gallon;Tank Diameter:6 Inches;Tank Length:12 Inches;Tank Material:Corrosion Resistant Steel;Max Air Pressure:150 psi;Fittings, (Qty) & Size:(4) 3/8 NPT bungs. Firestone Ride-Rite Firestone Ride-Rite Air Tank / Reservoir - 9244 9244 Air Tank