These vises are now for sale here https://cgsw.us/vises

They are now the heart of how I make parts in my shop. They hold the parts much better than clamps in a fixture and clamping parts in them doesn't distort the bodies moving part locations around. When the parts they are for become obsolete all you need to do is put new jaws on them and they are ready to go for the next parts, unlike dedicated fixtures.