WE HAVE CLIPS FOR EXTRA GRIP. Regal Classic Material Clip (standard head) or the Infinity Material Clip (Midge, Big Game, Stainless and Standard Revolution). These can be added to a vise purchase or of course purchased after the fact or to replace a lost or damaged one. 1. The Classic Material Clip comes included with ANY Traditional Head vise with the exception of the Revolution. If you are purchasing one of these, you are probably replacing a damaged or broken one that came with your Traditional Head vise. 2. All other heads- Midge, Big Game and Stainless Steel (and Traditional Revolution) all require the Infinity Clip. The Infinity Material Clip does not come included with any of these options and will have to be added here as an accessory.