IRWIN Large Locking Pliers are ideal for tightening, clamping, twisting, and turning large parts. Featuring jaws with a maximum opening of 3.11 inches and hardened teeth, these pliers provide a secure grip on parts of any shape or angle. The classic trigger mechanism delivers maximum holding force, while the pivot screw allows adjustable pressure for different tasks. Made from heat-treated alloy steel, the pliers offer exceptional strength and durability. The adjustment screw ensures consistent pressure for repeated use, and the quick-release safety catch enhances user safety.