Irwin Vise-Grip 7R3 7" Straight Jaw Locking Pliers are made of high-grade, heat-treated alloy steel for maximum toughness and durability. The straight jaws with hardened teeth provide maximum contact on flat, square, or hex work. The guarded release trigger quickly unlocks and protects from accidental release. These pliers are used for tightening, clamping, twisting, and turning.