The Big Red ATA92006UR air hydraulic bottle jack is ideal for lifting heavy-duty machinery, industrial construction equipment, farm vehicles, and more. Constructed of heavy-duty steel, it's designed for operating either manually or pneumatically. It features a lifting range between 10-7/16" to 20-1/16" with a 20 ton (40,000 lb) load capacity. Has an air pressure range of 100 to 175 PSI (note: a minimum of 110 PSI air pressure is required to raise rated capacity load). Equipped with an automatic dual spring controlled lowering system, fully polished and chromed cylinder rams enhanced with high-performance seals, and a push-button trigger control which increases speed and efficiency, reducing lift time. The air hydraulic bottle jack is also fitted with safety valve to prevent overloading. Welded handle grip makes this bottle jack easy to move and position.