Flare Nut-LONG 　 Part No. Ref. No. Description 443-04 04 1/4" O.D. Tube 443-05 05 5/16" O.D. Tube 443-06 06 3/8" O.D. Tube 443-08 08 1/2" O.D. Tube 443-10 10 5/8" O.D. Tube