Irwin 225108 C-Clamp, 900 lb Clamping, 8 in Max Opening Size, 4 in D Throat, Steel Body, Blue BodyLarger 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. Unit: EA UPC: