This Firestone Air Tank provides a source of compressed air for an air spring system. Tank has 1-Gallon capacity and (4) 1/4 in. NPT Ports. Tank is enamel coated to resist corrosion, tested to be SAE J10 compliant and capable of 150 psi. Features: Provides compressed air source for an air helper spring system Allows for faster inflation of air springs Holds 1 Gallon of compressed air Includes 1/4 in. NPT Ports (4) Steel Tank with brass fittings Resists corrosion with internal and external enamel coating Is SAE J10 compliant Operates at up to 150 psi of maximum pressure Specs: Tank dimensions: 12 in. long x 6 in. diameter Tank capacity: 1 Gallon Inflation Ports: 1/4 in. NPT PSI: Maximum of 150 2-Year limited warranty