Bessey DUO30-8 12-Inch DuoKlamp One Hand Clamp/Spreader Just turn the knob to change from clamping to spreading while using only one hand Large flat clamping jaws with soft pads allows clamping sensitive surfaces, right angles and both rounded and pointed work pieces 12" capacity with 260 lbs of clamping and spreading force Innovative pump lever allows effort free clamping or spreading Quick release of jaws with the push of a button