Flare x FlareElbow (Forged) Part No. Ref. No. Description 504-04 04 1/4" O.D. Tube Both Ends 504-06 06 3/8" O.D. Tube Both Ends 504-08 08 1/2" O.D. Tube Both Ends 504-10 10 5/8" O.D. Tube Both Ends