Stronghand Part # PR115S. Part # 00449. Swivel Pads locking C-Clamp. Forged, reinforced jaws for extra strength and less deflection. Made of heat treated steel and nickel chrome plated for strength and durability. Easy lock release. New design minimizes adjustment bar pop outs. Large adjustment screw features a hole so you can insert a screwdriver, etc and adjust to the desired force without releasing the pliers. Unique lock nut for repetitive clamping.