Irwin 6" "The Original" Vise Grip Locking C-Clamp Plier. Wide-opening jaws provide greater versatility in clamping a variety of shapes. Adjusts to proper opening by means of end screw and locks onto work by squeeze of hand. Permits user to hold work with 1 hand and apply clamp with other. Small jaw area at contact point ideal for close quarters. Easy release lever in handle to provide maximum locking force. Made of special alloy steel, hardened and tempered. Model 6R.