Designed to deliver precise clamping action, the RIDGID F-45 Forged Bench Vise has a sleek, rugged design that outperforms the bulky cast-iron competition. Featuring a 4-1/2 in. jaw opening, the workbench vise has a patented parallel jaw alignment system that delivers precise clamping action as well as longer service life. Built to last, it's constructed of 75,000-PSI tensile strength drop-forged steel for superior durability and has a sturdy forged steel swivel base with dual draw-down bolts. The adjustable swivel base offers increased work areas and allows the vise to securely lock in any position. The steel handle features rubber anti-pinch rings and a high performance, rolled double lead Acme screw. Designed for optimal tool performance, the work bench vise has surface hardened slides for smooth, precise operation. Additional features include standard, large capacity fixed pipe jaws and a large, hardened anvil.