As others have written here, this is a hobbyist tool. It works, highlights and all, but you need a good file and attention to detail to finish the edges. It doesn't have a depth gauge of how much pipe you leave sticking out for the flange to work. Therefore, you will spend several centimeters of pipe studying this part. Once you've flared, you'll also get an eccentric flare in addition to the ridges. I've tried rotating the tool, pipe and everything else but the flange still goes eccentric. The end result isn't clean because it's squeezing the tube on the sides, but it's functional. If I was a pro I wouldn't have bought it. Buy something that gives a better finish and requires less rework.
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