This heavy duty lifting jack delivers stable and secure lifting performance with strong load capacity and ample lifting height. It adopts efficient lifting structure to finish operation rapidly, and built-in overload protection structure effectively avoids safety hazards caused by excessive bearing weight.The serrated base keeps firm placement on uneven and soft ground, maintaining steady standing state during use. Made of sturdy steel and cast iron parts, the whole body is processed with anti-rust coating, resisting erosion and adapting to complex outdoor environments for long service life.The multifunctional tool supports lifting, pulling, clamping and other operations. It can handle vehicle rescue, field construction and farm maintenance work, perfectly matching outdoor exploration and emergency rescue demands.