Introducing the Wilton Classic 400 Series of C-clamps, one of the most expansive collections of C clamps engineered for superior clamping strength and stability. Hi-Vis Safety C-clamps are ideal for steel fabrication, industrial maintenance, and repair operations. Each drop forged C-clamp conforms to OSHA safety color standards for physical hazards regulation# 1910.144 and features an ACME rolled spindle with Black Oxide Coating and replaceable Perma-Pads® and a V-grooved anvil for secure holding of all materials. Available in a wide range of sizes, the 400 Series accommodates everything from small-scale projects to heavy-duty jobs, with jaw openings ranging from 0" to 12-1/4" and throat depths up to 6-1/4".