The Snap-on 1/2 Ton Air-Assist Telescopic Transmission Jack, No. TJA100, allows technicians to safely remove and install transmissions and FWD, RWD, 4WD transfer cases. The TJA100 1/2-Ton Air-Assist Transmission Jack has an easily-adjustable saddle to safely secure the specific load. With a range of 35" to 75", technicians can load/unload transmissions safely at their own center of gravity. The stable 36" heavy duty base and 5" polyurethane swivel casters navigate uneven shop floors. A hands-free pedal controls the first air-assisted stage lifting operation with a handle pump completing the second stage.