I used this on 1-1/4” black iron pipe so far. Will be trying the 2” soon. It cut the threads with relative ease. Just have to remember just like a hand cutter you need to reverse to break the chips ever so many turns.Only complaints are;The teeth didn’t last very long. Still cuts but I do have a few that broke, could have been user error.The detent ring does not like to allow the die to seat. Have to make sure the “open” ends are on the gravity side (bottom) so that they 1. Don’t come out and 2. Don’t get caught when trying to put the die in.