I have this one made by Mac Tools...
https://www.mactools.com/shoponline/...be-bender.aspx
Even though it is made out of nylon resin... it won't break. When the Mac Tool guy handed it to me, I kinda scoffed at it since it was "plastic". He said, "Good luck trying to break it."

So I bought it. It makes nice bends. I used it to make the steel 3/8" fuel line for my truck. Have also made some brake lines with it as well.
Gary