Snap-tite EA Series Coupler, Steel, 

1/4" Body Size, 

1/4" NPT Female Port, Poppet-Type Valve, General Purpose,

 29.7" Hg Vacuum-3000PSI (207Bar) Working Pressure, 

Nitrile Seals, Temp Range Degrees F: (-40 to +250)

Price is for one coupling