Re: Advice on brake lines
 

37 degree tooling is available by itself if you're going that route. More cost effective to get the whole kit - 3/16 to 1/2.

Re: Advice on brake lines
 

I've been using an old Imperial, similar to this one: https://www.ebay.com/itm/18551982762...Cclp%3A2047675
I just learned something this past year.
I was having a hard time stopping a new double flare from leaking. After googling, I found out if you don't quite finish the second flare, when you tighten the flare nut, it will "finish" itself. I.E. the flare will finish forming as you tighten it against the seat. Presto! After making several flares, including making a new line when it got too short, using this technique, it sealed on the first try.
Maybe this is common info, but I thought I'd mention it.

Re: Advice on brake lines
 

Rule book states that brake line must be DOT approved, which NiCopp is.

Faster classes require steel. I do highly recommend very good support for the rear brake lines. I have had a flare break in the flare nut at the caliper due to vibration.

Re: Advice on brake lines
 

I have a flaring kit I got from Inline Tube. It will double flare stainless brake line without annealing. I have done lots of show cars and some race cars with this. Most race cars I do 37 degree with tube nuts and sleeves. I love this tool!! Part # TLF08 and the 37 degree dies are seperate. Stainless lines and some Kugel Komponents line clamps are the bomb!!

Re: Advice on brake lines
 

I have the same kit with 45 degree dies. I've only used it on steel lines, but it works great.