The IRWIN Vise-Grip 10R Fast Release Straight Jaw Locking Pliers have heavy-duty jaws that allow for maximum contact on all work shapes, including round pipes, squares, or hex bolts. They have a self-energising lower jaw that allows for three times more gripping power and last twice as long, as the high grade alloy steel is heat treated for maximum durability. ProTouch grips provide more control, comfort and less hand fatigue. A Hex key adjusting screw tightens to draw materials closer together and also provides controlled release. Irwin Vise-Grip 10R Fast Release Straight Jaw Locking Pliers. Length 254mm (10in). Capacity 48mm.