The Crossover Vise is the industry's leading solution for holding and positioning of all types of work, allowing you to simply and quickly drop in an adaptable tube and plate which may be attached to your work. Rotate and articulate your work easily and simply -- the unit tightens in just a quarter-turn. Manufactured from thick steel and powder coated for durability, the Crossover Vise will give you the best workbench in town. The Crossover Vise is 6" x 8" x 7" in the vertical position. The vise had four 3/8" bottom holes for fastening to your surface of choice -- fastening bolts are not included.