These regular-duty Wilton® 400 Series C-Clamps are ideal for steel fabrication, and industrial maintenance and repair welding operations. V-grooved anvil allows for the secure holding of all materials including round, square and flat pieces. Has an adjustable jaw opening and extra deep throat. 2 1/4in. throat depth. Available in the Classic model with black oxide coated spindle, or Spark Duty model with copper plated spindle to resist spatter. Replaceable Perma-Pads®. 2 1/8in. to 12 1/4in. jaw width. Limited lifetime warranty.