The Yost 750-DI is a heavy duty versatile ductile iron vise that features three (3) sets of hardened steel pipe jaws (serrated, pipe jaws and v-jaws) allowing work on either flat or round stock. The head rotates 360 degrees, with locking pins every 30 degrees. Marking scales for head rotation and vise opening. Large built-in anvil. Swivel base securely mounts to work bench (3 - bolts by others), interlocking swivel base 360 degree motion equipped with (2) lockdowns. No pinch main screw handle.