This Firestone air tank provides a source of compressed air for an air spring system. Tank has 1/4-gallon capacity and (2) 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 1/4 gallon of compressed air     Includes 1/4 in. NPT ports (2)     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: 6 in. long x 4 in. diameter     Tank capacity: 1/4 gallon     Inflation ports: 1/4 in. NPT     PSI: Maximum of 150     2-Year limited warranty