Material : Plated Steel Working Temperature: -65°F (-54°C) to 250°F (120°C) Suitable for: Air, Hydraulic Fluid, ATV, Isopropyl Alcohol, Natural Gas, Fuel, Lubricants, Fresh Water JIC (Joint Industrial Council) fittings, provide a tight metal to metal seal on tubing that is flared to 37° degrees. Fittings require a nut and a sleeve (ferrule) for each tube end. JIC Thread : 1/2 JIC (3/4"-16 Threads)