Liding heavy-duty hydraulic jack. Thickened steel. Effortless lifting, stable and durable in 3 minutes. No need for human intervention. Easy joystick control to lift the car roof with just one touch. Hydraulic heart with reinforced tonnage and thick piston rod, supporting larger tonnage, safer, more labor-saving, sturdy lifting arm. Safe and stable hydraulic lifting arm ensures the safety and smoothness of the jack during lifting process. Lightweight, portable, space saving, good helper for changing tires when going out for long trips. Steel foot tire with balanced stress, excellent steel strength, thick and flexible movement, strong bearing capacity