Vise-Grip 9AC 9-Inch Locking Panel Clamp IRWIN VISE-GRIP locking clamp provides quick clamping and alignment of auto body panels Bottom jaw of the locking clamps slide in a straight-line motion Turn screw to adjust pressure and fit work; locking clamp stays adjusted for repetitive use Constructed of high-grade, heat-treated alloy steel for maximum toughness and durability Classic trigger release designed to provide maximum locking force Bottom jaw slides in straight line motion Adjusting screw gives exacting pressure Guarded release helps keep work fast and safe Powerful locking mechanism Full lifetime warranty