The Yost RIA-4 4" compact bench vise with 360-degree swivel base mounts to a workbench to provide light-duty clamping action. The 360-degree swivel base adjusts the direction of the jaws for proper placement. Hand-tightening the two lock knobs on the base secures its position. The hardened steel jaws are grooved for enhanced grip and can be replaced when worn. The jaws draw closer together or farther apart by turning the vise handle clockwise or counterclockwise. The vise body is made of class 30 cast gray iron for durability and strength, and it has a fully enclosed screw assembly to protect it against dust and debris. The base has four 5/16"-diameter holes for mounting hardware (not included).

*H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.

Vises use the clamping action of jaws to hold a workpiece in place for applications such as drilling and sawing. Vise styles are categorized by how the device is mounted. For example, bench vises mount to a benchtop; drill press vises bolt to a drill press; and woodworking vises fit underneath, on top, or to the side of a workbench. A vise's jaw opening and throat depth should be large enough for the workpiece.

Yost Vises manufactures a wide range of vises, including bench-mount, woodworking, and drill-press styles. The company, founded in 1908, is headquartered in Holland, MI.