I used this to replace rusty rear brake lines on my GM truck. Simply flared and bent with a small tube bender or by hand. These are not stainless steel and if left untreated they will rust. I will coat it with anti-corrosion paint and check it out in a year. I used 6ft of pipe and 4 flare nuts for a total of $6 and now I have new rear end brake lines. I'm using the rest of the reel to replace some of the brake lines on my Acura TL.