Irwin 4" "The Original" Vise Grip Locking Curved Jaw Plier. Ideal for tightening, clamping, twisting & turning. Turn screw to adjust pressure & fit work. Stays adjusted for repetitive use. Constructed of high-grade heat-treated alloy steel for maximum toughness & durability. Hardened teeth are designed to grip from any angle. Classic trigger release designed to provide maximum locking force. Locking nose plier clamp. Model 4WR. Item No.1002L3.