Looking to upgrade your air system for train horns or air suspension? This 12-liter (3-gallon) air tank is built tough with 7 ports that give you plenty of connection options for all your pneumatic needs. Constructed from heavy-duty steel with professional-grade welding that can handle up to 200PSI working pressure, this tank means business. The black powder-coated finish not only looks sharp but also protects against corrosion and rust. You get six 1/4-inch NPT ports plus one larger 1/2-inch NPT port - perfect for connecting multiple air horns, suspension systems, or other air accessories simultaneously. The package includes everything you need for installation: mounting hardware, hose, and sealing tape. Measuring about 22x7x8 inches, it's compact enough to fit in various vehicle locations while providing substantial air storage capacity. Whether you're running a loud train horn system that needs plenty of air volume or maintaining consistent pressure for air suspension, this tank delivers reliable performance. The quality construction ensures it'll handle vibration, temperature changes, and the demands of daily use. Perfect for trucks, SUVs, custom vehicles, or industrial applications where you need dependable air storage. Installation is straightforward with the included hardware, and the versatile port configuration means you can expand your system as needed. If you're serious about your air system, this tank provides the capacity and durability you need without breaking the bank.