Strong & durable, the body & sliding jaw are cast from close-grained grey iron which is machined on all friction surfaces for a smooth reliable action. The jaws, handle & main screw are steel, the latter having a two-start rolled acme thread to speed the jaws from fully closed to fully open with a minimum of winding. This compact bench vice with anvil is specifically designed for medium-duty workshop applications for both the professional craftsman & the DIY enthusiast who expect a compact vice with superior clamping force, safety features & excellent finish.