Or you can simply order and buy the O Ring kits from Renzetti. Now Renzetti use to be good but feel their quality has gone way down hill. Any vise that requires rubber bands and sales a spare parts kit for their vises says enough. I used to be a Renzetti fan and can honestly back what I am saying. I have left the Renzetti brand and all it's messed up hype after 14 years. Renzetti's customer service is tha pits. If all you are looking for is a vise that can turn the fly to look at the other side of it, then think of the two following brands:

1) Regal Medallion with the stainless steel jaws
2) HMH Standard and spartan models.

Simple, easy and hold hooks.