Ground Joint Coupling Spud, Size (In.) 1, (M)NPT Size (In.) 1, Hose Size (In.) 1, Material of Construction Zinc Plated Steel, Max. Temp. 450 FSpecification:Max. Temp. - 450 F WARNING::California ResidentsThis product can expose you to chemicals including Styrene, which is known to the State of California to cause cancer and birth defects or other reproductive harm.