Wilton — 4406, 4400 Series Drop Forged C-ClampWilton 4400 Series L Clamps are drop forged, regular duty with extra deep square throat. Drop forged, regular duty, extra deep throat The "square throat" design of the 4400 series means greater capacity and more versatility The Wilton 4" 4400 model offers more throat depth than most conventional 6" clamps, and the 6" and 8" models yield 37% more throat depth than standard deep throat C Clamps V grooved anvil allows secure holding of all materials