Yost Vises offers the 865-DI 6-1/2" Multi-Purpose Combination Vise with a swivel base.. The 865-DI has the ability to open up to 11" when reversed. The replaceable hardened steel pipe jaws can grip a pipe up to 3.5" in diameter. The swivel base securely mounts to a workbench. This vise features a continous rolled main screw thread and a balled screw handle supplied with safety rubber washers. The vise itself is made out of 65,000 PSI ductile iron, allowing for greater strength and longevity.