F-Series Swivel VisePrecise clamping action. Rolled double lead acme screw. Steel handle with rubber anti-pinch rings. Large capacity pipe jaws. Constructed of 75,000 psi tensile strength forged steel. Patented parallel jaw alignment system. Large, hardened anvil. Surface hardened slides for smooth, precise operation. Base Type: Swivel; Jaw Material: Forged Steel; Jaw Width: 6 in; Material: Forged Steel; Type: Workshop Bench Vise; Weight: 63 lb.