Bessey Tools 12" GearKlamp Bar Clamp a unique clamping solution designed specifically for challenging setups in tight spaces. It features a quick-shift button on the arm that allows for broad movements of the operating jaw, making adjustments fast and efficient. Once the operating jaw is positioned, the “around-the-rail” handle is twisted clockwise to securely tighten the clamp. To release the clamp, simply twist the handle counterclockwise, ensuring smooth and controlled operation every time. Model Number: GK30