... couplings 1/4" Aexcellent strength and flexibility This tough, synthetic air hose offers excellent strength and flexibility ! Reinforced with polyester ... for optimal durability and long service life, this all-purpose air hose is oil, gas and ozone resistant to handle ... polyester cordOil, gas and ozone resistantSolid brass threaded male couplings Max pressure:200 PSIInside diameter: 3/8"Length: 50 ft. ...