You'll be amazed at how this copper brake line bends over a standard (rusty steel) or stainless steel line. It is easy to work with, does not rust and is durable. Keep in mind that this is not the kind of soft copper tubing you can buy from Home Depot for your refrigerator's ice maker. It is a much stronger alloy intended for use in brake lines and is more difficult to form/bend than pure copper. But still much easier than steel/stainless steel lines. double flash? It's much easier to make or use a compression fitting as a last resort until you can double up.