At some point you might need to replace a brake line. Your local auto parts store might carry different lengths of brake line that already have fittings and flares. I suggest you go this route if you find you need to replace a brake line. If you do decide to do your own brake line flares, I strongly suggest you invest in the best flaring tool you can buy. Cheap flaring tools can wreck your day. A good flaring tool can save your day. I hope to do a video on this process as soon as I get my hands on one of those awesome flare tool sets.