Forged from 40CRV chromium-vanadium steel, it undergoes overall heat treatment with a hardness of HRC55-60. The surface is spray-coated; the jaw undergoes secondary heat treatment and polishing, with a hardness of HRC55-60, and is equipped with a chrome-plated nut. It features a spring design, and the head can move at a 90¡ã angle. It is suitable for operations such as pulling and dragging steel bars on construction sites.