Wilton — H406 Columbian Economy Drop Forged C-ClampWL9 20304 H406, Columbian Economy Drop Forged C Clamp 0 6 Opening Capacity Columbian Economy C clamps feature drop forged frames and an oscillating head that provides a tighter hold on angular work pieces. Features Drop forged, regular duty with extra deep throat Exceptional value and performance Improved frame design allows for a higher proof test, greater throat depth, and lower overall weight V grooved anvil allows secure holding of all materials