Larger handle on this c-clamp makes it easier to apply torque for more clamping pressure with less hand fatigue. Double-threaded screw reduces screw deflection and drift for faster clamping and allows you to apply 50% more clamping force than with most clamps. For woodworkers, carpenters, welders, builders, or do-it-yourselfers. Suitable for general clamping needs. Larger swivel pad reduces marring on work surface and increases stability. IRWIN® Tools QUICK-GRIP™ C-Clamp, 5-inch (225105)