This bench vise is a heavy-duty tool designed to securely hold objects in place while you work. It features a strong steel construction and a durable, adjustable jaw with a large opening for a variety of materials. The vise also has a swivel base for easy positioning and a
From Wikipedia
A vise or vice is a mechanical apparatus used to secure an object to allow work to be performed on it. Vises have two parallel jaws, one fixed and the other movable, threaded in and out by a screw and lever. The jaws are often flat but may have grooves, adapt to the shape of the workpiece or be custom made.