I went thru the "Baker" tool line on Midways web sight 45 pages with no result on this tool. It looks similar to a dent raiser from one of the old gunsmithing books, Howe I think, it was inserted into the barrel and was tapped together to raise the dent if I remember right. It seems to me that you would have a problem keeping the plug from turning and staying aligned with the dent on the one shown by Midway.

jim

I learn something every day, and a lot of times it's that what I learned the day before was wrong