This was a great addition to the tool box and after this experience I will be buy the whole set.I had 3 mangled studs on my dodge (9/16 18) and I was concerned that I would not be able to get a normal hex chaser on the end. With this thing I came from behind and cleaned up the threads. I would have been required to pull the axle in order to replace the studs. But not with this tool!Use oil to help ease the cuttingClean the die during the processUse 1 3/8" socket