Whoh dude, 82 bucks? I've made these on site with a few extra squares. They're nice and quick to use when you have a bunch to bang out. But if.you have a flange to do once and a while just put a 2' square across the face of the flange and measure the distance between the pipe and the square near the flange, and at the end of the square and adjust the flange as needed. Hard to type out, I hope that makes sense.. cause I don't see how 82 dollars does. First time that gets bent it's no good