NAPA 38009
I was searching around a few weeks ago about this. these NAPA 38009 Brake lines have 10mm ends and they are longer than the MAF ss lines (forget how long?) but only like 4-6 inches longer. They are "rubber" not SS. They are $17.00 each. Usually not in stock but no shipping to get them to your store (or at least not here in Bend coming form Portland).
The "rubber" OEM have lasted 24 years in my rig..so I don't see any reason to go SS other than to just spend double the $$, I don't buy into being able to tell that the brakes will be "firmer" with the SS lines, maybe so but I don't use my rig in city driving, why else would that matter?.
If you search "NAPA 38009" I think the threads will pop up.