The tool appears to work as intended. The color literally falls off when I touch it. Not worth the money, there are better ones if you're not in a hurry.
Very good value for what it costs if you need this tool for what I think. (I hope it made sense the way it was in my head). the whole process went without any problems.
Good steel square tip tool for 1 3/8", 1 1/8", 1" and 3/4" plugs and slotted plug tool for 1/2" " x 1.5" and 3/8" x 1" slots. A little pricey for what it is, but likely to last forever.