Expandable Versatile Vise has two (2) closing options. In the forward position the vise opens to 7″ and when the front jaw is reversed the jaw opening increases to 11″. The reversible vise features large dual anvils, (1) Upper, (1) Lower, the lower anvil converts to product support shelf when reversing front jaw, replaceable hardened steel top jaws (serrated and reversible to smooth). Replaceable pipe jaws are recessed for machinist vise use, pipe jaws are designed to grip pipe securely. Swivel base securely mounts to work bench (4 – bolts by others), interlocking swivel base 360 degree motion equipped with (2) lockdowns.