Product details:
Yost 4 Heavy Duty Machinists Vise This Stationary Base vise with 4 Jaw Width is made of high strength 60,000 PSI tensile ductile iron. Large pounding anvil surface. Deep throat for extra working room. 2 mounting holes for securing unit. No pinch main screw handle, Replaceable hardened steel serrated jaw. Continuous rolled thread on main screw. Meets Federal Specifications GGG-V-410, Type VI, Class 2.