Irwin Tools® 4935578 The Original™ Curved Jaw Locking Pliers, 7", #7CRIrwin Vise Grip The Original Curved Jaw Locking Pliers features Self energizing lower jaw provides 3X more gripping power than traditional locking pliers, with no slipping or stripping. Provides maximum torque without requiring heavy input pressure, jaw mechanism naturally grips tighter as more torque is applied to the tool. Classic trigger release provides maximum locking force. Curved jaw puts tremendous pressure on four points of any style nut or