The Yost Heavy Duty Mechanics Vise is a durable high-strength combination bench vise ideal for reliable service in professional applications. The straight-pull screw and nut design combined with 60,000 psi ductile iron construction results in a vise that generate superior clamping force. Additional features include replaceable pipe jaws, interlocking swivel base, and generous anvil work surface. This is the perfect vise for the serious mechanics workbench. Our products meet or exceed the Industrial Standard of Federal Specification GGG-V-410A, providing consumers with quality products that last for years at a great price.