Irwin 2" Quick-Grip Variable Pressure Handi-Clamp features C-clamp style jaws with non-marring swivel pads that can be used to hold a variety of materials without damaging them. The variable force is controlled with the user's grip, the tighter you squeeze the more clamping pressure is applied. It locks in position and has a quick release trigger that removes the clamp from work. It is a 1-hand operation and has durable glass-filled nylon construction. It has a clamping pressure of 75 pounds, a maximum opening size of 2 inches, and a throat depth of 2 inches. Quick-Release'trigger allows for fast and easy positioning and release. Patented ratcheting mechanism provides adjustable clamping pressure and significantly reduces hand force required to generate clamping pressure. High-tech resin construction provides strength and durability. Specially designed jaws hold odd-shaped workpieces.