The IRWIN VISE-GRIP Original Large Jaw Locking Pliers features a set of heavy-duty jaws that grip around work of all shapes. These pliers are ideal for plumbers, mechanics, welders, and anyone working with large objects with a turn screw that adjusts pressure to fit work and stay adjusted for repetitive use. Constructed of high-grade heat-treated alloy steel for durability, the pliers have the classic trigger release that provides maximum locking force. Backed by the IRWIN Lifetime Guarantee.