Real Avid Smart Fit Jaws, For Use with Vice, Multi Fit, Red AVSFJMF The Smart-Jaws - Multi-Fit Sleeves: a breakthrough innovation meticulously engineered to revolutionize your gunsmithing experience and elevate the functionality of your Master Gun Vise. These textured sleeves provide a secure" damage-free grip on various firearms and components. Crafted with thermoplastic rubber for protection" the sleeves feature nine grooves for precise gripping of odd-shaped parts.