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For sale is a Hartmann quick lock milling or drilling vise. Jaws are replaceable and are held by screws. The present jaw seems to have been precision milled down somewhat, see pictures. Maybe they wanted to have a nice shoulder for positioning things horizontally for drilling. You can replace the jaws with your own (I do not mean the jaws from your mouth, I mean something you have or make). 6" Jaws.
