This is a C-clamp, from the related product series, there are different specifications to meet a variety of needs. Like the 400 series drop-forged carbon steel C-clamps, specifications include 2 inches (maximum opening 2 inches, throat depth 2 – 1/4 inches, etc.), 3 inches (maximum opening 3 inches, throat depth 2 – 7/16 inches, etc.), 4 inches (maximum opening 4 inches, throat depth 3 – 1/8 inches, etc.), 6 inches (maximum opening 6 inches, throat depth 4 – 3/4 inches, etc.), 8 inches (maximum opening 8 inches, throat depth 5 – 1/16 inches, etc.), 10 inches (maximum opening 10 inches, throat depth 5 – 15/16 inches, etc.), 12 inches (maximum opening 12 inches, throat depth 6 – 1/4 inches, etc.). They are made of drop-forged carbon steel frames, suitable for general industrial scenarios, screws/handles come in copper-plated (to prevent welding slag splashes) and blackened (for corrosion resistance) types; there are also the 540 series ductile iron C-clamps (heavy-duty), with specifications of 2 – 1/2 inches (maximum opening 2 – 1/2 inches, throat depth 1 – 5/8 inches, etc.), 3 inches (maximum opening 3 inches, throat depth 1 – 7/8 inches, etc.), 4 inches (maximum opening 4 inches, throat depth 2 – 1/8 inches, etc.), 5 inches (maximum opening 5 inches, throat depth 2 – 1/2 inches, etc.), 6 inches (maximum opening 6 inches, throat depth 2 – 3/4 inches, etc.), 8 inches (maximum opening 8 inches, throat depth 3 – 1/4 inches, etc.), 10 inches (maximum opening 10 inches, throat depth 3 – 5/8 inches, etc.), 12 inches (maximum opening 12 inches, throat depth 3 – 5/8 inches, etc.), 14 inches (maximum opening 14 inches, throat depth 3 – 3/4 inches, etc.). They are made of ductile iron frames, suitable for general woodworking scenarios, screws/handles come in blackened and galvanized (for corrosion resistance) types. Different specifications have their own characteristics in terms of maximum opening, throat depth, load capacity, etc., and can meet various operational requirements.
