Coated stainless steel tube;(3/4 in. I.D.) 3/4 in. FIP x 3/4 in. FIP;Use to connect water supply to water heater;Use with natural, manufactured, mixed and liquefied petroleum (LP or propane) gases and LP gas-air mixtures;Exclusive Procoat clear coat, provides corrosion resistance to deterioration from most common household chemicals, UV rays and salt;Stainless steel finish;For indoor use;Temperature rating: 40 Degree to 180 Degree F;Pressure rating: 125 PSI maximum;Designed, machined and assembled in the USA