Yost Vises 105 5" Machinist Vise with Stationary Base Bench-mount machinist vise with stationary base, 5" nominal jaw width, and extra-large jaw opening and throat depth provides clamping action for heavy-duty applications Flat, stationary base provides a firm, even foundation when mounted Ductile iron body is durable and strong for extended life Jaws are grooved for enhanced grip and can be replaced when worn Meets Fed. Spec. GGG-V-410B Type VI Class 1 specifications and is made in USA