45° SAE brass flare fittings. Male Flare x Male NPT. Two-piece construction—nut and body. Use with copper, brass, aluminum, or steel tubing. Temperature range: -40°F to +250°F. Resists mechanical pullout. Easy to disassemble and can be reassembled many times with no effect on seal. Primary uses: Fuel equipment, plumbing, gases, refrigeration, and vacuum lines. Meets functional requirements for SAE, ASME and ASA codes for pressure piping.