MARTINS INDUSTRIES' 33-Ton Professional Grade Floor Jacks are robust and easy to use. This jack is designed for heavy-duty lifting such as industry trucks, buses and machinery Comes with 2 stackable extensions for sturdy, stable and safe lifting. Jack can be rolled under as little as 5.95'' of clearance. Multi-position and long handle can be lowered down to 15° for easy positioning under vehicle, which is safer than conventional bottle jacks. Air/hydraulic pump allows cylinder to ascend and descend fluidly by a simple push of the switch, eliminating manual pumping. The 33T Jack has a lift handle for transportation.SAFETY WARNING: Never get under a vehicle that is not supported by a certified and proper jack stands. Validate lifting capacity before use. Correct and proper use of floor jacks and jacks stands can prevent injury and/or death.