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.Features :Engineered for use with the Master Gun ViseTextured flat surface ensures a secure hold on shotguns, pistols and bolt gunsThermoplastic rubber integrated for a strong grip without damaging firearmsNine distinct grooves on the opposite side for damage-free grip on odd-shaped components like barrels, suppressors and BCGsAccommodates diameters up to 3 inches, handling diverse projects with precision