Add some flare to your car's steel or aluminum line--double flares, that is--with one of these Summit® double flare tool sets.
They include five thread dies for forming 45 degree flares on 3/16 in., 1/4 in., 5/16 in., 3/8 in., and 1/2 in. tubing. These tools also work on .040 in. copper tubing, in case you want to do some plumbing around the house.
A handy storage/carry case is included.
Not designed for use on stainless steel lines.