Capacity: 4 ton (8,000 lbs.), and the lift height ranges from 6.69" to 16.56".Engineered with double ram lift system, providing wider lift range than common bottle jacks. Equipped with a extension screw top, adjust it before actually pumping. Special hydraulic oil features wide working temperature, which ranges from -13 °F to 140 °F, suitable for variety application. Includes 1-year limited manufacturer warranty