[Size] The thread size of NPT is 1/8-27 NPT,6AN is 9/16-18 UNF. [Parameter] Max Working Pressure:1500 PSI.Working Temperature Range: -40℉ to 250℉. [Sealing] The AN side is sealed by a 37 degree angle and the NPT side is sealed with a 60 degree tapered threads.(Sealant or PTFE tape is recommended for installation) [Material] Aluminum alloy 6061-T6 [Application] Can be used in vacuum reservoirs,hard-wired fuel pumps to regulators,fuel supply lines,etc. EVIL ENERGY is our brand, we're a direct and professional manufacturer, one of greatest manufacturer and exporter in tuning parts include intake system,exhaust system,fuel system,cooling system,interior and exterior parts.The adapter can be used to connects two different sizes or styles of fittings together.With 360°rotation design,which can be connected flexibly at multiple angles,make your pipeline layout neater.Compatible with oil, fuel, water, fluid, air