Atlas 618 half nuts, used with about 70% life remaining

Description

A pair of used Atlas 618 half nuts M6-12A that I took off my lathe when I was chasing down a threading issue, which turned out to be due to a worn leadscrew. These are not the original half nuts as far as I can tell and have some wear. I'd guess they have about 70% life left. Please check the pictures carefully. *NOTE* these are the wider half nuts and won't fit the narrow half nut holder that uses the M6-12 half nuts so please check that they will fit *NOTE*