MARTINS INDUSTRIES' 20-Ton Professional Grade Floor Jacks are robust and easy to use. Indispensable tool for all servicing trucks. Comes with 3 additional extensions which provide sturdy, stable and safe lifting. This jack is designed to be rolled under as little as 21.5 cm of clearance. Multi-position and long handle can be lowered down to 15° for easy positioning under the vehicle, which is safer than conventional bottle jacks. Handle consists of a built-in air up and air down switch which eliminates manual pumping. Air/hydraulic pump allows cylinder to ascend and descend fluidly. The 20T 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.