The RIDGID 40220 (Model 461) straight pipe welding vise clamps ½″–8″ (15–200 mm) pipe securely for tacking and welding. Constructed from durable, heat-resistant cast iron, it resists strain, heat distortion, and warping. Features machined swivel nuts, precision pins, and specialized chain screws for smooth, reliable installation. Offered with a lifetime warranty.