Check the listing for details. GRAINGER APPROVED 87600GR Nipple,1".,Close,Galvanized Steel 1RKL4. Condition: New. Listed at 6.25 USD. Nipple, Application Air, Gas, Potable Water, Finish/Coating Galvanized, Fitting Compatibility Class 6000, Gravity Flow No, Inside Diameter 1 in, Manufacture Location Globally Sourced, Material Steel, Maximum Operating Pressure 900 psi @ 150 Degrees F, Maximum Steam Pressure 5356 psi @ 650 Degrees F, Metal Pipe Construction Seamless, Nominal Pipe Size 1 in, Outside Diameter 1 5/16 in, Overall Length 1 1/2 in, Pipe Weld Type Electric Resistance Weld, Schedule Schedule 160 This GRAINGER APPROVED pipe nipple is suitable for use with air, water, oil, natural gas, and steam in high-pressure, high-temperature boiler applications.• NPT threads at both ends allow for easy connections• Nipple must be used with properly rated fittings.