The Real Avid Smart Jaws Tube-Fit Sleeves for Master Gun Vise are expertly designed tools that secure cylindrical objects with precision and ease. Crafted by Real Avid, these sleeves enhance your Master Gun Vise experience by providing a reliable grip on various items, including suppressors, PVC, cast-iron pipes, and other types of tubing. With a unique dual-sided design, one side features a rubberized V-shaped surface that offers non-marring and heat-resistant support for delicate items, while the other side reveals a metal V-shaped surface for a secure hold on more robust materials. Capable of accommodating diameters up to 3.75 inches, these sleeves are perfect for both maintenance and modification tasks.