The 20-Ton Air/Hydraulic Service Jack, No. HDJ20, from OTC is capable of lifting large vehicles such as school buses, garbage trucks, bucket trucks, and other commercial vehicles weighing up to 20 tons. The jack's low profile and rugged steel frame members make it reliable and durable under load. The jack offers air-assist lifting, as well as foot or jack handle action. The device was designed with shop use in mind and includes large metal wheels and swivel casters with internal ball bearings for easy movement.