Parker Vise Jaws on Ebay
 

Nice looking resin vise jaws on ebay. Seller claims he made them to fit his #974. They may fit other 4" Parker vises, or even bigger or smaller ones. It would be a simple job to inlet small magnets into the curved part of the jaws to make using them easier. I have brass and wooden jaws for my favorite Parker vises, but many owners have nothing to cushion the work from the steel jaws. Check these out.