They looks like a very nice set of Old Time Bullet Pullers. That just screwed into the top of a Single Stage Reloading Press like a reloading die. I still have two of them for a 22 Caliber & a 30 Caliber made by a company named Bonanza that is no longer in business I belive. They still work very well and were very strong, but they are sorta of hard on the bullets you pulled with them. I used mine mainly, to pull 223 & 30 Cal Blacked Tipped Armor Peirce bullets from Military Ammo that was so cheap and plentiful back in those days. Or at least ((( IMHO ))) that is what they are, maybe.