Compressed Air Tank - Portable - 5 gal - 9 in Diameter - 16 in Long - Aluminum - Coat with anticorrosion paint. Notes: Manifold with gauge NOT INCLUDED located on top of air tank. Size: 5 Gallons = 18 L (volume) - Material: Aluminum - Finishing: Anti corrosion paint - Max. Pressure: 145 PSI - Port Sizes: 1/4" top and 1/4" bottom.