QUICK-CHANGE jaw provides multi-positioning flexibility. Easy, one button clutch locking and release. Converts to a spreader by reversing the clamp pads. Locking clamp is perfect size for hobby and craft applications. 4 1/4-inch maximum jaw opening capacity, 1 3/16-inch throat depth capacity. IRWIN Tools QUICK-GRIP One-Hand Micro Bar Clamp, 4 1/2-inch (53006)