Over time we realize some of the vise components, namely the O rings, can become
worn and need to be replaced. If you live in an arid climate, you have probably
had your O rings dry out and split. We have packaged up all three ring sizes used on the
vise and bobbin; one for the center arbor (behind the rear hub), one for the friction nut, and four for the bobbin/spool arbor. We have also included one (1) garter spring to upgrade
the O ring on your jaw (if you have an older vise) and a few of the small set screws that.