F-45 F-Series 5 Forged ViseThe F-Series vises are constructed of 75,000 psi tensile strength forged steel. These sleek, rugged vises out perform their bulky cast-iron competition. RIDGID F-Series vises feature a patented parallel jaw alignment system. This exclusive feature gives the F-Series precise clamping action, as well as longer service life. Product features:All-steel, drop-forged construction. Rolled double lead Acme screw.Steel handle with rubber anti-pinch rings.Increased work areas. Standard fixed pipe jaws. Large, hardened anvil. Surface hardened slides for smooth, precise operation. Forged steel swivel base with dual draw-down bolts. RIDGID Lifetime Warranty.