Rigid steel tubing with flare and inverted flare fittings is the form of plumbing used on most vehicles. Fuel lines, brake lines, automatic transmission cooler lines and even some air-conditioning ...

It is mandatory for you to apply a double flare to every line end and fitting. When you are flaring brake and fuel lines, it is suggested you use a lubricant at the flaring head and line end.

This type of brake line flaring tool will work if your material is soft, you get a good cut, and presumably have to hold your tongue just so.

Making your own brake lines might sound scary, but with this tool, it's a breeze. Add a flaring tool to your arsenal to take your DIY skills to the next level.

Flaring metal brake lines and metal fuel lines (or transmission lines) is something of an art when using the most common type of double flaring tool. We're talking about the mass-produced double ...