High speed air turbo motor quickly raises the load to the desired height. Air control knob allows precise lifting and lowering. Welded pump for trouble free performance. Heat treated extension screw allows for maximum lift height. Heavy duty wheels with bearings for easy movement. Includes three adapters, .8", 2.4" and 3.9". Three handle positions allow for easy storage, movement and access to lift point. 88.2 lbs.