They offer smooth and fast operation with a robust lever and grey iron castings that are manufactured to resist distortion under pressureIdeal for workshops, machinery and engineering applications Product features SKU JEFBV5 Size 5″ Jaw Width 125mm Jaw Opening 183mm Gross Weight 16.5 kgsOur heavy duty, cast iron bench vices are complete with serrated jaws for easy gripping and pre-drilled holes for bench mountingAll Jefferson bench vices come complete with serrated jaws for easy gripping and pre-drilled holes for bench-mounting as standard