The Original™ Locking C-Clamps with Swivel Pads from Irwin. Wide-opening jaws provide greater versatility in clamping a variety of shapes. Swivel pads hold tapered work, awkward fabricating jobs, and delicate projects without damaging the work surface. Constructed of high-grade heat-treated alloy steel for maximum toughness and durability. Classic trigger release designed to provide maximum locking force.