Irwin Industrial Tools' Vise-Grip Quick Adjusting Wrench features a lever that adjusts the jaw 50 percent faster with a single motion. Unlike traditional wrenches, the Irwin Vise-Grip Quick Adjusting Wrench will not strip nuts, bolts or fasteners because the jaw locks securely into place. The grooved internal jaw slides forward manually for quick, one-handed sizing and locks in place for leverage and repeated use. The Quick Adjusting Wrench is available in metric and SAE versions with precise scale markings to size nut and bolt diameters easily. ProTouch Grips provide molded handles for comfort and less hand fatigue.