As an experienced industrial and scientific practitioner, I was gravely disappointed with this thread cutter's performance. Despite following the instructions to the letter, the cutter produced inconsistent and imprecise results. I wasted valuable time, and even had to redo a few items. The only pro was that the stainless steel body seemed sturdy, but that's meaningless when the device can't perform its primary task correctly. Save yourself the frustration and look elsewhere for a reliable thread cutting solution.