Dewalt 6" Quick Clamp

This large clamp is versatile and easy to use
Its reinforced nylon body and heat-treated steel bar are strong and durable 
With 300-pounds of clamping force, 3-1/4in. throat depth, quick change button for easy conversion to a spreader, and removable jaw pads to help reduce marring, this clamp was built to exceed the expectations of professional contractors   

300lb clamping force