The IRWIN Vise-Grip straight Jaw Locking Pliers are suitable for general purpose and provide maximum strength and gripping capacity. Adjusting screw that tightens to draw materials closer together and also provides controlled release. Adjusts to various sizes. Straight serrated jaws with quick-release lever. 7RC Length 178mm, Capacity 38mm. 10RC Length 254mm, Capacity 48mm.