[TWO STAGE TRANSMISSION JACK] - telescopic two-stage hydraulic ram, wide 4-leg base with swivel casters for stability and easy movement. Foot pedal easily raises qiuckly under load and provides safe and controlled lowering of load [QUICK LIFT] - upgraded with dual spring, higher pressure, increased the stability and load capacity,as well as the lift speed than single spring,32 inch - 70inch Extended to reach a maximum height of 70 inches [PUMP] - Two stage telescopic ram and chrome polished cylinder provide stability and long life. [WEIGHT CAPACITY] - Two stage transmission jack with 1660pounds capacity [SAFETY] - Hydraulic by-pass prevents over-extension of ram and integrated safety valve protects against overloading of jack. Fully adjustable saddle with corner brackets