The Grainger 14C728 is a heavy duty industrial grade bench vise that features a 6 inch jaw width capacity, 4 inch jaw opening capacity, and a 360 degree swivel base. It has an anvil working surface and replaceable serrated steel jaws. The vise body and base are constructed from high strength cast iron with a powder coat finish. It can securely clamp a wide range of workpieces up to 6 inches wide and 4 inches thick. This rugged vise is designed for demanding shop, garage, and industrial applications.