If anyone plans on doing any brake flaring or hard fuel lines, this tool is awesome. Since i'm redoing all my brake lines, I needed something to make consistent and reliable double flares. I tried using the $30 tool you normally see but had very little luck making a nice flare. This tool will do 45 degree single and double flares in 3/16, 1/4, 5/16, and 3/8 hardline. Very simple to use and all the fittings are on a rotating head.