A CNC Power Chuck increases the clamping force of the jaws, providing more stability and control to the workpiece. This helps to reduce the potential for slippage and increases the safety of the operation. When a workpiece is clamped in a power chuck, the extra-long jaws provide a larger contact area for the workpiece, which helps to reduce the potential for slippage or movement. This helps improve the work's accuracy and reduces the risk of accidents and injuries.