HW93720 Hein-Werner Automotive 1/2 Ton Air / Hydraulic Telescopic Transmission Jack Combines air (first stage only) and hydraulic power for maximum speed and accuracy. First stage utilizes air for a quick initial rise. Second stage uses hydraulic hand pump for precise control. The Wide steel frame equipped w/ 4 ball bearing 360° swivel casters make for easy maneuverability. Hefty nylon safety strap helps anchor transmission. Four ratcheting load support arms quickly configure to most transmission pan configurations. Wide caster base for smooth maneuverability. Head adjustments made easy with big easy-to-grip crank handles. Optional adapters available. 2 Year Warranty.