These are new still in the box, 6" diameter rotary Glenco(GRS) Engraving Bit Sharpening Discs. Bought by a fabricating company here in Russellville, Ar. in 1988. Never got used.
I have several for $20 plus shipping (each). New they are $89.00.
I have several for $20 plus shipping (each). New they are $89.00.