Constructed of high-grade steel and built to exacting standards for quality and durability. High quality, large diameter, hydraulic steel cylinder unit resulting in lower oil pressure needed to raise the load, which helps to reduce wear and extend service life. Hydraulics are powered with high quality oil, which offers better corrosion resistance and high/low temperature flexibility, allowing unit to operate at temperatures between 40 °F and 105 °F (4°C and 41°C). Maximum lift height of 15 1/4'' (38.7 cm). 20 tons lift capacity (40, 000 lbs).