Specification: AN6 (9/16x18 UNF) female Inlet / AN8 (3/4x16 UNF) male outlet, 37° sealing angle guarantees a positive seal at maximum operating pressures. Advanced material: Made of premium lightweight 6061-T6 billet aluminum，Anodized finish for strength, durability and anti-corrosion.Please rest assured to use. Parameter: Max Working Pressure: 1500 PSI. Working Temperature Range: -65º F to 252º F. Function：This AN expander fitting allows you to step up the size of a male AN flare fitting，Widely used in returnless fuel system, fuel cell tank, fuel line, valve cover, etc. Package includes：2PCS 6AN Female to 8AN Male，with 1 PC Teflon Tape.All Breezliy fittings and adapters are fully compatible with gasoline and alcohol based fuels