vintage cut off tool attachment plymouth products indiana save a disc

this sale is for what i think is a cut off attachment ,,the bolt part is 4-3/4 inches long,5/8 of an inch in diameter,,the cut off is 2-3/4 inches long,2-3/4 inches wide,,these are tagged plymouth products corporation plymouth indiana,one side of the box says sav-a-disc 9890,the box has some light wear and staining,,parts are unused and have no damage,,very well made,,,any questions just send me an email,,,,thank you