These locking pliers are equipped with an adjusting screw and release trigger to help provide secure holding and easy use on a wide range of objects - Heavy-Duty Jaws Grip Around Work of All Shapes - Ideal for Plumbers, Mechanics, Welders, and others Working with Large Objects - Ideal for Tightening, Clamping, Twisting and Turning Jaw Capacity / 3-1/8 in Jaw Length / 3 in Jaw Thickness / 1/2 in Jaw Width / 3 in Overall Length / 12 in Jaw Release Lever / 1-Handed Screw Mechanism / Hex Key Adjusting Screw Material / Steel Finish / Nickel Plated