These Irwin Vise-Grip® original 7cr 7-inch curved-jaw locking pliers have a self-energizing lower jaw to provide more gripping power with no slipping or stripping.
Irwin pliers provide maximum torque without requiring heavy input pressure, utilizing a jaw mechanism that naturally grips tighter as more torque is applied to the tool.
A classic trigger release provides maximum locking force, and a curved jaw puts tremendous pressure on 4 points of most nuts and bolt heads, making the curved-jaw locking pliers perfect for maximum-torque applications.