The BESSEY DuoKlamp is a very handy light duty clamp that can be operated with a single hand, leaving the other hand free to support the work piece until it is firmly clamped. If you need to push something apart, maintain a specific gap or position, the DuoKlamp can be reversed with a simple twist of a dial. Jaws are designed to resist flex & are capable of creating up to 260 lbs of clamping force. BESSEY. Simply better.