The Flex-A-Jaw Clamp has 7 adjustable positions that make clamping multiple pieces of together a breeze. simply adjust the arms, lock them in place, then squeeze the handle. The Jaws lock in place once pressure is applied to the handles. It has a quick release lever for popping the clamp off the stock when finished. Clamp stock 0" to over 7" with ease all with a single hand clamp. the Flex-A-Jaw Clamp has a molded comfort grip handle along with soft non-marring jaw pads for superior grip.