The Wilton Classic Hi-Visibility C-Clamp features high visibility yellow paint. The v grooved anvil feature allows materials to be securely held, including round, square and flat pieces. The clamp also features a patented frame geometry design to allow for maximum strength with greater throat depth. The clamp is ideal for steel fabrication, industrial maintenance, production and repair operations. ADDITIONAL SPECIFICATIONS: Nominal Opening Capacity: 0 - 6-1/16"; Throat Depth: 4-1/8"; Clamp Pressure: 6600 lb.; Spindle Size: 3/4"