Hydraulic Pro-Lift floor jacks meet or exceed ANSI/PALD requirements. Patented bypass device protects against over-pumping for safer operation. Built-in safety valve provides overload protection. Heavy-duty steel construction provides long term durability. Swivel saddle and swivel rear casters provide easy positioning and safety. 2 ton capacity lift range 5-1/2" to 13". Ideal for auto, truck service, farm, and shop use.