Im pretty sure it is a double flare the same as brake lines. Look at the old one to see if it has 2 layers. You can buy a passable double flare maker at harbour freight pretty cheaply

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1982 300CD Turbo (Otis, "ups & downs") parts for sale
2003 TJ with Hemi (to go anywhere, quickly) sold
2001 Excursion Powerstroke (to go dependably)
1970 Mustang 428SCJ (to go fast)
1962 Corvette LS1 (to go in style)
2001 Schwinn Grape Krate 10spd (if all else fails)