Comparison : Item # A44-2, 1/8" O.D. Tube S.A.E. Flare Fitting-Assembled with Short Rod Nut - Tee Union
Item # A44-3, 3/16" O.D. Tube S.A.E. Flare Fitting-Assembled with Short Rod Nut - Tee Union
Item # A44-4, 1/4" O.D. Tube S.A.E. Flare Fitting-Assembled with Short Rod Nut - Tee Union
Item # A44-5, 5/16" O.D. Tube S.A.E. Flare Fitting-Assembled with Short Rod Nut - Tee Union
Item # A44-6, 3/8" O.D. Tube S.A.E. Flare Fitting-Assembled with Short Rod Nut - Tee Union