Locking Welding Clamps, Locking Welding Clamp, Max. Opening 2 3/4 in, Throat Depth 3 1/4 in, Clamping Force 500 lb, Nominal Clamp Size 9 in, Number of Pieces 1, Swivel Pad No, Tether Capable, Overall Clamp Length 9 in, Chrome Plated, Chrome Vanadium Steel, Locking Mechanism Quick Release Trigger, Screw Mechanism Knurled Adjustable, Jaw Width 2 3/4 in, Jaw Type U-shaped