Check the listing for details. GRAINGER APPROVED 87402GR Nipple,1/2".,2".,Galvanized Steel 1RKK3. Condition: New. Listed at 5.08 USD. Nipple, Application Air, Gas, Potable Water, Finish/Coating Galvanized, Fitting Compatibility Class 6000, Gravity Flow No, Inside Diameter 1/2 in, Manufacture Location Globally Sourced, Material Steel, Maximum Operating Pressure 900 psi @ 150 Degrees F, Maximum Steam Pressure 6237 psi @ 650 Degrees F, Metal Pipe Construction Seamless, Nominal Pipe Size 1/2 in, Outside Diameter 27/32 in, Overall Length 2 in, Schedule Schedule 160, Side A Connection Type Threaded, Side A Gender Male 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.