IRWIN Tools QUICK-GRIP Handi-Clamp, 4-Inch (1799213) Quick-release trigger for fast, easy positioning and convenient one-handed operation. Use anywhere you need an extra hand. Patented ratcheting mechanism provides adjustable clamping pressure and significantly reduces hand force required to generate clamping pressure. Designed as the answer to hundreds of quick clamping needs around the home, workshop garage, or job site. Specially designed jaws reach around and hold odd-shaped work pieces. Non-marring swivel pads protect work. Non-slip handles guarantee grip. Made from durable, lightweight impact-resistant resin and