Flare x Flare Elbow (Bar) 　 Part No. Ref. No. Description 505-04 04 1/4" O.D. Tube Both Ends 505-06 06 3/8" O.D. Tube Both Ends 505-08 08 1/2" O.D. Tube Both Ends 505-10 10 5/8" O.D. Tube Both Ends